Novel Herbal Drug Delivery System: A Comprehensive Review of Approaches, Formulation, Evaluation and Applications

Abstract

The recent development of Novel Drug Delivery Systems (NDDS) has allowed related to a significant change in the pharmaceutical sciences field. These cutting edge methods of administration are designed to maximize treatment effectiveness, minimize side effects, or improving patient adherence. This thorough analysis examines current advancements and breakthroughs in NDDS improve pharmaceutical therapy by providing enhancing bioavailability controlled drug release, and increasing drug stability. Continued efforts in drug delivery research will play a crucial role in creating the future of medical care. but also for pharmaceutical companies seeking strong market potential. Herbal excipients have advantages and disadvantages, creating both are special potential and challenges in their use. All things considered, this review highlights the potential involvement of novel drug delivery systems and herbal excpients to the advancement of drug delivery methods, creating stimulating opportunities for further study and developed . Herbal extracts having therapeutic qualities, such anti-inflammatory and antioxidant activities, are becoming more and more in demand in the global medical field. However, the development of NDDS comes with challenges such as high manufacturing costs, complex formulation processes, regulatory hurdles stability concerns. The review provide information on the excellent potential role in managing several major health illnesses.

Keywords

Introduction

A novel drug delivery system employs advanced technologies and innovative methods to deliver active compounds safely and effectively, ensuring the intended therapeutic effect.¹ Novel drug delivery systems can be categorized based on their underlying mechanisms: physical and biochemical. Physical mechanisms, also known as controlled drug delivery systems, include processes such as osmosis, diffusion, erosion, dissolution, and electrotransport. Biochemical mechanisms encompass approaches like monoclonal antibodies, gene therapy, vector systems, polymer drug conjugates, and liposomes. Novel Drug Delivery Systems (NDDS) involve designing advanced pharmaceutical forms with optimized features like smaller particle size and targeted delivery. This approach enhances the effectiveness of therapeutic agents, outperforming traditional dosage forms.² Nanoparticles as drug carriers enable precise targeting, reducing side effects and boosting the therapeutic response. This leads to sucessful therapy with fewer adverse reactions. A novel drug delivery system is an innovative method designed to overcome the limitations of traditional drug delivery approaches. Modern medicine treats specific diseases by precisely targeting the affected area within a patient’s body and delivering the drug directly to that location. Many natural methods are showing better results than drugs or surgery, and they don’t have side effects.³

Necessity of NDDS in herbal drug:

When new drug technology is used in herbal medicine, it may assist optimize the potency and lessen the negative effects from various herbal compounds and herbs. This is the basic idea behind the application of cutting-edge medication delivery methods in herbal medicines.  This is the fundamental concept underlying the use of innovative drug delivery methods in natural therapies. Modern medicine can target specific areas of the body, delivering drugs right where they’re needed.  A good drug delivery system ensures the right amount of medicine reaches the exact site of action, making treatment more effective.

By combining ayurvedic medicines with novel drug delivery systems, we can enhance their effectiveness and tackle complex diseases more efficiently. This integration can unlock the full potential of herbal medicines and offer new hope for treating serious health conditions.?Herbal medicines were often overlooked due to challenges like lack of scientific evidence, standardization issues, and difficulties in extracting and identifying individual components in complex herbal blends. This hindered their development into modern formulations.?

Bioavailability is a significant factor in herbal medications.  Many of these prescription drugs appear to be exceptionally effective in laboratory trials, but when tested in the body, their efficacy decreases because they are poorly soluble in lipids or have molecular sizes that aren’t appropriate for proper absorption.  Curcumin, quercetin, and piperine are examples of natural ingredients that have the interesting capability to increase bioavailability.  Nanotechnology can be used to address these issues with the formulation of herbal drugs and improve their absorption.?’?

Physicochemical and Biological properties of herbal Drug 

The efficacy of herbal drug depends on both their physicochemical and biological properties as discussed below:

 Physicochemical properties 

• Solubility:

Ability of a substance to dissolve in a solvent, bioavailability  and affecting drug absorption .

• Partition Coefficient (log P):

A measure of a drug’s lipophilicity reveals how well it is distributed across the lipid and fluid phases.

• Surface Activity:

Property related to the ability of a substance to reduce surface or interfacial tension; important in emulsions and suspensions.

• Complexation:

The medicine may form a compound with other molecules, modifying its stability, solubility, or bioavailability.

• Isomerism:

The existence of compounds with different structures but the same molecular structure can have an impact on pharmacokinetics and pharmacodynamic.

• Hydrogen Bonding:

Intermolecular interaction that influences drug-receptor binding, crystal structure, and solubility.?

Biological properties

• Antioxidant:

Lowers the body’s oxidative stress and aids in the neutralization of free radicals.

• Antimicrobial:

Stops the growth of or destroys germs like bacteria, fungus, and viruses.

• Anti-inflammatory:

Reduces inflammation by inhibiting the synthesis of molecules that cause inflammation.

• Anti-cancer Activity:

Has cytotoxic effects on cancer cells or stops the growth and spread of tumors.?

Role of secondary metabolites (Alkaloids/ Flavonoid)

Secondary metabolites, like alkaloids and flavonoids, play a significant role in plants and have various physicochemical and biological properties.

Physicochemical Properties:

1. Structural diversity of alkaloids and flavonoids contribute to their unique properties.
2. Solubility of alkaloids are often basic and soluble in organic solvents, while flavonoids are generally more soluble in polar solvents.
3. Stability of compounds can be sensitive to light, temperature, and pH, affecting their stability.

Biological Properties:

1. Antimicrobial activity are Many alkaloids and flavonoids exhibit antimicrobial properties, helping plants defend against pathogens.
2. Antioxidant activity of flavonoids, in particular, are known for their antioxidant properties, which can help protect against memory loss.
3. Pharmacological effects on alkaloids and flavonoids have been found to have various     pharmacological effects, such as anti-inflammatory, anticancer, and cardiovascular-protective properties.
4. Ecological roles of there compounds can play a role in disease control, pollination, and even allelopathy (inhibiting growth of other plants).

Examples:

1. Alkaloids: (Eg. Caffeine, Quinine)
2. Flavonoids: (Eg. Quercetin, Anthocyanins)?

Classification and selection of NDDS for herbal Drug

Drug Selection Criteria

These principles form the foundation for selecting both the main and supporting criteria in nanoparticle preparation, along with exploring potential alternatives.

The core principles can be described as:

Reducing the drug to nanoscale dimensions without altering its therapeutic activity. Replacing toxic reagents used during preparation with safer, biocompatible substances. Ensuring that atoms and molecules bind to nanoparticles in a way that preserves their functionality without introducing toxicity. Encapsulating highly toxic drugs within biocompatible polymers to minimize harmful effects. Where the use of hazardous agents cannot be completely avoided, restricting their quantity to the lowest possible level. 

The herbs chosen for cultivation should match the specific species or botanical variety listed in the national pharmacopoeia to ensure consistency and quality. For newly introduced medicinal plants, the selected botanical variety should be identified, documented, and linked to the original source material or described based on traditional medicine practices of its country of origin. When harvesting herbs, pick them early in the morning after the dew has dried. Be gentle to avoid damaging the leaves and stems, which can cause the loss of volatile oils. Only harvest what you need, unless you’re planning to dry or freeze them.?

Overview of Novel Herbal Drug Delivery Approaches

Novel Approaches for Drug Delivery explores current and emerging trends in drug delivery systems, serving as a reliable academic resource on recent advancements in The pharmaceutical sector .New techniques like phytosomes, niosomes, liposomes, hydrogels, and nanoparticles are being explored to improve herbal medicine delivery. Among these, combining phosphatidylcholine directly with herbal extracts has shown better absorption than traditional herbal infusions. A number of complicated drug delivery and targeting systems are currently being actively developed in order to reduce medication loss and degradation, eliminate side effects, improve accessibility, and ensure targeted delivery. Drug carriers include soluble polymers, micelles, cells, cell ghosts, lipoproteins, liposomes, and microparticles composed of natural or synthetic polymers, which may be biodegradable or non-soluble. When herbal medicines are incorporated into novel drug delivery system their stability, safety and bioavailability improve significantly. These techniques provide continuous release, improved patient compliance, and modified plant extract and active action.?

METHODS OF PREPARATION 

1. Bangham Method

To prepare liposomes, lipids are first dissolved in an organic solvent and then the solvent is evaporated, forming a thin lipid film on the container’s surface. This film is subsequently hydrated with an aqueous buffer, leading to the formation of multilamellar vesicles (MLVs). To achieve uniform and smaller vesicle sizes, further size reduction techniques such as sonication or extrusion are applied.¹?

2. Solvent Evaporation

To prepare the formulation, the drug is mixed with soya lecithin and transferred into a 100 ml round-bottom flask. Then, 20 ml of acetone is added, and the mixture Is refluxed at 50–60°C for 2 hours. After refluxing, the mixture is concentrated by reducing its volume to about 5–10 ml, leading to the formation of a precipitate. The mixture is then filtered, and the precipitate is collected for further use.¹¹

3. Sonication method:-

To prepare niosomes, the drug is first dissolved in a buffer, and then a surfactant and cholesterol are added in a 10 ml glass vial. The resulting suspension is sonicated using a probe at 60°C for 3 minutes, leading to the formation of niosomes. ¹²’¹³

4. Hot Homogenization

To prepare solid lipid nanoparticles (SLNs), the lipid is first heated above its melting point, and the drug is incorporated into the molten lipid. Simultaneously, an aqueous surfactant solution is heated to the same temperature and then mixed with the molten lipid to form a pre-emulsion. This mixture undergoes high-speed stirring followed by high-pressure homogenization (500–1500 bar for 3–5 cycles) to produce nanosized droplets. Upon cooling either at room temperature, in a refrigerator, or using cold water these droplets solidify into SLNs. The size, surface charge, and stability of the SLNs can be controlled by adjusting process parameters, though the method may present certain limitations. ¹?

5. Coacervation: 

Coacervation begins by adding a second polymer or a non-solvent medium, which causes partial dehydration or reduces the solvent quality of the system. The temperature is maintained above the gelling point of gelatin to prevent premature solidification. This process leads to the separation into two liquid phases: a gelatin-rich (coacervate) phase and a gelatin-poor phase. Phase separation can be induced by mixing with colloids or by adding agents such as alcohol (ethanol), acetone, or salts like sodium sulfate. As a result, two distinct coacervation phases are formed, useful for microencapsulation processes.¹?‚¹?

Herbal Excipients in NDDS:

The term excipient is derived from the latin word excipients, meaning to receive, to gather, or to take out. In pharmaceutical formulations, the overall quality depends not only on the active pharmaceutical ingredient (API) and the manufacturing process but also on the choice and quality of the excipients.¹?

The pharmaceutical industry utilizes a variety of plant-derived excipients for multiple purposes, including as  disintegrants, sustaining agents, binding agents protective, stabilizer thickening  protective collide suppository base,  and coating materials gelling agents .¹? Common examples of such natural excipients include starch, agar, alginates, carrageenan, guar gum, xanthan gum, gelatin, pectin, acacia, and tragacanth. Herbal excipents are biocompatible, non-toxic and eco-friendly alternatives to synthetic excipents.¹?

Classification of herbal drug excipents ¹?

Table no.1

Sr. No.	Classification of herbal drug excipients.	Example of excipients.
1.	Binder	Acacia gum, Tragacanth
2.	Diluent	Starch, lactose
3.	Lubricants	Talc, stearic acid
4.	Disintegration	Guar gum, starch
5.	Coating agenst	Xanthan gum
6.	Coloring agents	Curcumin, beetroot powder
7.	Preservatives	Citric acid, Benzoic acid
8.	Suspending agents	Methyl cellulose, gum acacia

Binders

These help in the agglomeration of powder particles to form granules and provide mechanical strength to tablets.

Examples:  Acacia gum, Tragacanth

Emulsifying Agents

Help stabilize emulsions in liquid dosage forms.

Examples:  Lecithin (from soybean), Acacia ²?

Comparison for impact of herbal and synthetic excipients on the properties of finished product 

Synthetic excipients are designed to have specific functional properties, but their compatibility with active pharmaceutical ingredients (APIs) can vary. To ensure safe and effective formulations, compatibility tests are crucial to prevent adverse interactions between synthetic excipients and APIs. Research has shown that synthetic excipients can significantly impact the evaluation of novel nano drug delivery systems.

However, herbal excipients can perform equally well, provided they are carefully selected. The key lies in choosing the right excipient, whether synthetic or herbal, to achieve optimal functionality and compatibility with the API.²¹

Evaluation parameters for Novel Herbal Formulation:

Evaluation parameters are essential for assessing the performance and quality of novel herbal formulations.

Particle size and zeta potential

Zeta potential, which reflects surface charge and forecasts colloidal system stability, is derived from the electrophoretic mobility of particles under an applied electric field. The zeta potential or particle size can be identified using photon correlation spectroscopy and dynamic light scattering ²²

Vesicle stability and transition temperature

To evaluate physical stability, periodic measurements of nanoparticle size and structural integrity are made under carefully regulated storage settings.  Assesses the herbal nanoparticles’ long-term stability by looking for changes in shape, size, or aggregation.

The stability of vesicles can be determination by estimation the size or structure of the vesicles over the  time .The Mean size is measure by dynamic light scattering and structural changes are covering by transmission Electron. The transition temperature of the vesicular lipid systems can be detected by different scanning Calorimetry. ²³

 Drug content  and compability  studies

 To measure the quantity of active phyto-constituent in the formulation and guarantee consistency from batch to batch. To create sure that there are no negative interactions between the active botanical components and the excipient that may result in deterioration, toxicity, or a loss of potency. The total of drug can be quantified by a modified  of high-performance liquid chromatographic method or by a Suitable for spectroscopic technique. ²?

Drug Entrapment efficiency and surface tension

Nanoparticles are separated from the un-entrapped (free) drug by high-speed centrifugation. The total of drug in the supernatant is calculated suitable analytical approch (e.g., UV or HPLC). Entrapment efficiency (%) = (Entrapped drug / Total drug) x 100 Determines the drug-loading capacity and formulation efficiency of herbal nanoparticle systems.

These systems are design to enhance  therapeutic effectiveness and Safety of drug delivering them to the specified location in a control manner. Drug Entrapment in NDDS refer to the Process of capturing or encapsulation a drug delivery system.

Entrapment in NDDs: Microencapsulation, Liposomes, Nanoparticles, Nanocapsules.

The surface tension activity measured of  interracial  tension activity of the drug in aqueous solution can be measure by the ring method in a Du Nouy ring tensiometer.²?

SPECTROSCOPIC AND CHROMATOGRAPHIC ANALYSIS 

Spectroscopy analysis: Used to determine the chemical substances found in herbal medications and to assess their quantity and purity.

Spectroscopy study is based on collaboration  of  electromagnetic  radiation  with substance. When a beam of electromagnetic radiation falls of sample it either adsorbed, reflected, transmitted,  scattered as result : Spectrum, Spectrophotometer, Spectroscopic techniques 

Different type of spectroscopy 

1. UV visible spectroscopy 
2. Infrared spectroscopy 
3. Mass spectroscopy 
4. Nuclear magnetic resonance spectroscopy (NMR)²?

Chromatography analysis :

Used to identify, seprate, and test herbal compounds for quality and purity. Chromatogragphy is a physical separation technique that separates the components of a mixture into stationary or mobile phase.

Classification of chromatography 

1. Gas solid chromatography 
2. Gas liquid chromatography 
3. liquid liquid chromatography 
4. partition chromatography 

Types of chromatography 

1. Thin layer chromatography 
2. High pressure liquid chromatography 
3. Column chromatography 
4. Ion exchange chromatography²?

Thin layer chromatography:

Thin layer chromatography is useful for identifying molecules in a given substance, observing the span of a reaction, and assessing an element’s purity.  The attempt between the solute and the mobile phase for locations of connecting on the stationary phase is the basis for compound separation of compounds. The distance a chemical travel with respect to the solvent front is indicated by the RF value in TLC.  It is computed by dividing the compound’s displacement from the initial location by the solvent’s displacement.²?‚²?

RF ³?=     Distance travelled by solute

Distance travelled by solvent

Fig.no.1 Tlc chamber for development with a  lid Or Closed  jar.²?

High Pressure Liquid Chromatography (HPLC):

Fig.no.2 Instrumentation of high-pressure liquid chromatography (HPLC)³¹

Fig.no.3 Gas chromatography ³³

In- vitro  drug release studies 

By keeping the nanoparticles in a dissolution medium with a certain pH, which mimics physiological conditions, the rate and mechanism of drug release are evaluated.  In order to fit kinetic models, drug concentration is continuously tracked periodically.

Drug release is a vital in-vitro evaluation technique that helps to find out the mechanism and pace of drug release from the delivery system.  This is also carried out by USP dissolution equipment, including Type I (basket method), Type II (paddle method), and modified Franz diffusion cells for semisolid formulations.  The equipment choice is influenced by the intended administration route and dose form.  By mimicking environments like the stomach (pH 1.2), intestines (pH 6.8), and colon (pH 7.4), the Higuchi model, Korsmeyer Peppas equation, Zero-order (constant release rate), First-order (release rate dependent on drug concentration), and pH-dependent drug release studies are essential for guaranteeing site-specific release.³?

APPLICATION OF NOVEL HERBAL DRUG DELIVERY SYSTEM

Antioxidant and Anti-inflammatory uses:

Antioxidants traditionally used to prevent food spoilage also neutralize harmful free radicals in the body, helping to combat stress, aging, heart disease, and cancer. As interest grows in using natural antioxidants to both preserve food and promote health, it becomes increasingly challenging to accurately evaluate their activity whether in pure compounds, mixed extracts, or whole food sources and to optimize their use In products.³?‚³?

Plants produce significant amounts of antioxidants to protect themselves from oxidative stress. These natural compounds have potential applications in promoting human health, particularly in disease prevention and treatment. Indian medicinal plants are a source of such antioxidants, offering various levels of protective effects.³?

Anti-inflammatory medications fall into a number of types, such as nitric oxide donors, immunomodulators, glucocorticoids, antioxidants, and non-steroidal anti-inflammatory medicines (NSAIDs).  Due to their high lipophilicity and tendency to produce a variety of adverse effects, these medications require the development new anti-inflammatory pharmaceuticals or “new drug delivery systems” (NDDS) that can enhance their properties and applications. [32]An inflammatory reaction is related to the majority of eye conditions and procedures.  Ocular medicine has evolved to treat the eye directly due to it is a precise target site.  Intraocular injections are used to treat the majority of local inflammatory cases that affect inner eye structures, but they have a number of drawbacks, including unstable medication concentrations, local adverse effects, and drug bioavailability.³?

Cardiovascular disorders 

Various typical There are dosage forms on the market, and the novel drug delivery system is attracting people’s attention due to its focused medication distribution and ability to extend drug resistance to the heart’s damaged areas.  Patches and nanoscale formulations such as micelles, liposomes, nanoparticles, and dendrimers were used in the innovative drug delivery methods. These formulations have the primary advantage of avoiding the hepatic first-pass effect and renal excretion, as well as exhibiting permeability and saving two  and saved.??

Cardiovascular diseases (CVDs), such as heart attacks and strokes, are frequently caused by atherosclerosis, a chronic condition in which plaque builds up in the arteries. This disease is still a major worldwide health concern. As a unique strategy to treating atherosclerosis, scientists have recently been researching metal-based nanoparticles. A better understanding of how these nanoparticles function and accumulate in plaque is essential for the development of nanomedicine for the treatment of CVD.?¹‚?²

Antidiabetic Formulation

Diabetes mellitus affects the majority of people globally and is becoming a more serious health problem, particularly in India's large cities. The availability of synthetic drugs and their frequent side effects have increased interest in herbal remedies.  India has historically used medicinal plants in systems like ayurveda, which offers natural choices for managing diabetes.  Plants including fenugreek, garlic, caesalpinia bonduc, and asafoetida have bioactive compounds called phenolics and flavonoids that can lower blood sugar levels.  Due to their accessibility, affordability, or lack of adverse reaction, these natural therapies are growing in popularity. This is especially true in areas where access to regular medical care is limited.?³‚??‚??

Curcumin loaded poly(caprolactone) nanofibers have also been shown to be beneficial in the treatment of diabetic ulcers. Scientific evidence supports the exploration of various nano formulated herbal drugs or phytoconstituents that are effective in managing diabetes and promoting wound healing. This paper focuses on the integration of nanotechnology with herbal remedies to enhance therapeutic efficacy, particularly in the treatment of diabetic complications such as ulcers.??‚??

Hepatoprotective application 

Liver toxicity, caused by factors like oxidative stress, drugs, infections, and toxins, leads to serious liver conditions such as fibrosis and liver failure. Conventional treatments have limitations and side effects, prompting grow interest in herbal medicines with hepatoprotective properties. Plants like milk thistle, ginger, green tea, mandarin, and liquorice is rich in bioactive compounds such as flavonoids and polyphenols that offer antioxidant, anti-inflammatory, and liver-regenerating benefits.?? Herbs are protect liver cells by neutralizing free radicals, reducing inflammatory action, or enhancing detoxification. Various extraction methods i.e solvent, soxhlet, and ultrasound-assisted techniques are used to isolate those are active compounds. Studies support the clinical potential and safety of these herbal remedies, suggest their integration into mainstream liver disease treatment, though further research is needed for standardization and validation.??

CHALLENGES AND LIMITATIONS  :

Regulatory barriers:

One of the central regulatory problems is inconsistent definitions of nanomaterial between jurisdictions and even between regulatory sectors (e.g., pharmaceuticals vs food vs environment). This fragmentation complicates product classification, regulatory pathways, and data packages required for approval. Regulatory agencies in the EU, US and other jurisdictions continue to refine guidance, but harmonization is incomplete, creating uncertainty for developers.

Preclinical testing and relevance of assays Standard toxicology assays often do not capture nanoparticle-specific behavior (e.g., corona formation, agglomeration, surface reactivity). Regulators require robust safety data, but lack of validated, nanoparticle-specific test methods leads to delays and repetitive.??

Scale-up and commercialization challenges :

Numerous obstacles pertain to the creation, viability, and manufacturing of scale-up optimization for NPs in different form The task of moving up from small research batches to large-scale industrial production is an important hurdle to the development of innovative drug delivery systems (NDDS).³? Numerous advanced delivery  Platforms like liposomes and nanoparticles require complex method of synthesis that requires stringent control over sterility, and particles size homogeneity, which greatly increases production rate.  For instance, making nanoparticles with consistent drug-loading capacity and homogenous size is still a methodology hurdle that frequently calls for specialized tools like high-pressure and microfluidic devices. Hominization process.?¹

Stability and shelf-life concern:

Concern about safety: To evaluate these concerns, regulatory agencies such as the EMA  or FDA require thorough  clinical or preclinical research, which can significantly extend the approval process.  In order to overcome these obstacles, scientists are creating more accurate toxicological models and tools for imaging that can more accurately forecast the safety or distribution of NDDS.?²

Stability and Storage restrictions: Most nanoparticle forms are depended upon variations in pH, temperature, humidity. Maintain their therapeutic efficacy during stored or transporting it required stability.  Over time, some nanoparticles are more likely to accumulation or experience chemical breakdown, which limits their beneficial effects.?³

Standardization issue:

Herbal nanomedicine faces major challenges with standardization and safety. The effectiveness of herbal formulations can vary due to differences in plant source, climate, and harvesting conditions, making it hard to ensure consistent quality and therapeutic outcomes. Isolating single active compounds may also reduce the overall efficacy by losing the natural synergy found in whole extracts. On the safety side, both traditional and nano formulated herbal medicines raise toxicity concerns. For example, metal-based Ayurvedic preparations like Bhasma are believed to enhance absorption, but if not properly processed, they can lead to harmful metal accumulation in the body. Likewise, uncharacterized herbal nano formulations may carry unknown risks related to particle size, distribution in the body, and long-term effects.??

FUTURE PERSPECTIVE

Emerging trends in drug delivery:

Future development in NDDS focused on smart , stimuli -responsive ,and AI assisted system that can adapt to biological environments for precise therapeutic outcomes.

1) Targeted drug delivery : Targeted drug delivery has been significantly advanced through surface engineering of nanocarriers, enabling site-specific drug release while minimizing systemic exposure.By modifying the surface with ligands such as antibodies, peptides, or small molecules, nanocarriers can selectively bind to receptors overexpressed at disease sites, such as tumors or inflamed tissues. This targeted advance not only enhances drug collect at the desired locations but also decrease off-target effects and toxicity, thereby improving overall therapeutic efficacy and patient outcomes.

2) Theranostics :  Theranostic nanomedicines offer a comprehensive and precise approach to diagnosis and therapy of various diseases. Some innovative nanoparticles have not moved beyond the preclinical stage for a variety of reasons, while others have been unable to go from in vivo investigations to clinical trials. Furthermore, others say that developing new, effective disease therapies is challenging since existing animal models do not correctly reflect human diseases. The clinical translation of nanomedicine and theranostics nanoparticles containing herbal compounds could benefit from the creation of animal models.

3) Stimuli Responsive NDDS: Beyond the conventional design of nanocarriers, a new area of study is stimuli-responsive programmed specific targeting.  More recent research has concentrated on creating a nanoformulation that reacts to internal or exterior stimuli in order to achieve a smart spatiotemporal drug release.  In the first instance, the drug delivery system reacts to biological signals such as pH, specific redox conditions, or temperature changes.  Exogenous techniques, however, can be used by external stimuli to track the induction of the nanomaterials themselves.

4) International with AI and predictive modeling : AI has the potential to significantly improve drug design or optimize, especially in nanomedicine. Machine learning and predictive modeling can help enhance nanocarrier design by focusing on efficiency and stability. However, issues such as insufficient data, high processing costs, stability, and lack of interpretability in AI models remain most important impediments. To finally integrate AI into medicine delivery, efforts must be directed toward improving model transparency, validation method and pharmaceutical data quality. This will allow for more consistent and efficient development of improve medication formulations or targeted delivery systems.

Need for clinical validation and industrial applications:

Various liposome-based treatments, highlights the need for better predictive methods.  Most clinical studies are in their early stages, with a focus on short-term results. Despite this, nanomedicines are finding new industrial applications, such as diagnostics, and immunizations.  However, rise production raises difficulties of quality control, regulation, and cost.  Advancements in clinical trial design, testing standardization and model development are crucial to assuring safe or effective commercialize.

CONCLUSION :.

Novel Drug delivery System (NDDS) represent advanced formulation that overcome limitations of conventional dosage forms, offering improved safety, efficiency ,and patient compliance. health professionals with a broad range of arsenals to treat diseases with never before efficacy, safety and precision. Since ancient times, herbal remedies have been used extensively around the world. Physicians and patients have recognized their superior therapeutic efficacy because they have less side effects than contemporary pharmaceuticals. In this way, the excellent both conventional and cutting-edge therapeutic methods will be blended with herbal excipients in contemporary medications. More research effort should be made available for research on herbal materials to develop novel, non-toxic, biocompatible, patient-acceptable, economical, and environmentally friendly excipients that can be used in pharmaceutical formulation. Because of their potential for drug entrapment, nanocarriers are exploited as carriers of conventional chemotherapeutic drugs and platforms for combinational therapy, multifunctional diagnostics, and theranostics.

CONFLICT OF INTEREST:

The authors declare that there is no conflict of interest.

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