Herbal Drug Delivery System: A Novel Approach for Anti-Cancer Therapy – A Comprehensive Review

Abstract

Cancer is one of the most challenging diseases to treat due to its complex pathophysiology, multidrug resistance, and side effects associated with conventional chemotherapies. Herbal medicines have gained growing attention as alternative or complementary therapies in cancer management because of their multi-targeted mechanisms, biocompatibility, and lower toxicity. However, their therapeutic potential is limited by poor solubility, low stability, rapid metabolism, and inadequate bioavailability. Advancements in pharmaceutical sciences have introduced Novel Drug Delivery Systems (NDDS) that can overcome these limitations by improving pharmacokinetic profiles, controlling release, and achieving targeted delivery. Systems such as liposomes, nanoparticles, nanoemulsions, phytosomes, solid lipid nanoparticles, and transdermal carriers have successfully enhanced the therapeutic efficacy of herbal anti-cancer compounds. This review focuses on the current state of herbal drug delivery systems (HDDS) in cancer therapy, discussing key phytochemicals, formulation strategies, mechanisms of anticancer action, challenges, and future perspectives in integrating traditional herbal medicine with modern drug delivery technology.

Keywords

Introduction

Sr. No.	Types	Structure	Examples
1.	Liposomes		Curcumin-loaded liposomes have shown improved Anti-cancer activity in breast & colony cancer models by enhancing cellular uptake & stability.
2.	Phytosomes		Silymarin phytosome exhibits improved liver protection & Anti-cancer potential due to enhance bioavailability.
3.	Polymeric Nanoparticles		Curcumin-loaded PLGA nanoparticles showed enhanced apoptosis induction & bioavailability compared to free curcumin.
4.	Solid Lipid Nanoparticles (SLNs)		Berberine-loaded SLNs demonstrated higher cytotoxicity against MCF-7 breast cancer cells with sustained release.
5.	Nanoemulsions		Curcumin nanoemulsions have enhanced oral absorption & potent anticancer activity compared to crude curcumin extract.
6.	Microspheres & Microcapsules		Camptothecin-loaded microspheres provide controlled release & reduce toxicity in cancer model
7.	Transdermal & Navel(Umbilical) Delivery System		Transdermal delivery for cancer treatment primarily focuses on localized skin tumors or for managing cancer-related pain, using various methods to enhance drug penetration through the skin barrier.

5. Examples of Herbal Drugs in Advanced Delivery Systems

6. Challenges in Herbal Drug Delivery

7. Recent Advances and Emerging Trends

• Targeted Nanocarriers: Conjugating ligands (antibodies, folic acid) on nanoparticles to target tumor-specific receptors.
• Green Nanotechnology: Using herbal extracts themselves to synthesize metallic nanoparticles (e.g., gold/silver NPs) with anticancer potential.
• Hybrid Systems: Combining synthetic and natural drugs in one carrier for synergistic effects.
• 3D Printing and Microfluidics: Used for precise fabrication of herbal delivery devices.
• Artificial Intelligence (AI): Assisting in molecular docking, prediction of drug–target interactions, and optimization of herbal formulations.

8. Toxicological and Regulatory Considerations

Although herbal drugs are considered safer, dose-dependent toxicity can occur. Standardization of herbal extracts and toxicity profiling are necessary before clinical trials. Regulatory authorities such as US-FDA, EMA, and AYUSH (India) encourage the use of scientifically validated herbal formulations with proven safety.

9. Future Prospects

• Integration of Traditional and Modern Medicine: Utilizing ancient Ayurvedic knowledge with advanced pharmaceutical tools.
• Personalized Herbal Medicine: Using genetic profiling to customize herbal therapy.
• Clinical Validation: Conducting randomized controlled trials to confirm efficacy and safety.
• Regulatory Framework: Developing global guidelines for herbal nanomedicines.
• Sustainable Formulation Development: Using biodegradable and eco-friendly materials for carrier design.

CONCLUSION

Herbal Drug Delivery Systems offer a promising frontier in anticancer therapy by combining the therapeutic wisdom of traditional medicine with the precision of modern nanotechnology. Encapsulation of herbal bioactives into advanced delivery systems such as liposomes, nanoparticles, and phytosomes enhances their solubility, stability, bioavailability, and targeting efficiency. This approach minimizes toxicity and improves patient outcomes.

However, challenges remain in the form of standardization, scalability, and clinical validation. Future research should focus on mechanistic studies, translational research, and regulatory harmonization to realize the full potential of herbal-based nanomedicine in cancer therapy.

REFERENCES

1. Aggarwal, B. B., et al. (2020). Curcumin: The Indian Solid Gold. Advances in Experimental Medicine and Biology, 595, 1–75.
2. Sharma, R. A., et al. (2021). Phytochemical delivery systems for cancer therapy: Recent advances and future perspectives. Pharmaceutics, 13(10), 1658.
3. Devi, V. K., Jain, N., & Valli, K. S. (2010). Importance of novel drug delivery systems in herbal medicines. Pharmacognosy Reviews, 4(7), 27–31.
4. Yadav, R., et al. (2023). Herbal-based nanoparticles as potential nanomedicine for cancer therapy. Exploration of Medicine, 4(2), 201–212.
5. Gupta, R. C., & Srivastava, A. (2022). Herbal nanomedicine: Promises and pitfalls in cancer therapy. Frontiers in Pharmacology, 13, 987654.
6. Singh, R., & Lillard, J. W. (2018). Nanoparticle-based targeted drug delivery. Experimental and Molecular Pathology, 86(3), 215–223.
7. Jain, S., & Jain, R. (2020). Novel drug delivery systems for herbal drugs. International Journal of Pharmaceutical Sciences Review and Research, 60(1), 45–51.
8. Muteeb, G., et al. (2025). Herbal Medicine: Enhancing the Anticancer Potential via Drug-Delivery Approaches. Pharmaceutics, 17(2), 512–528.
9. Healthline (2020). Pechoti Method: Does belly button oiling work? Retrieved from www.healthline.com.
10. Nair, R., et al. (2024). Advances in nanotechnology-based herbal formulations for cancer therapy. Journal of Controlled Release, 365, 45–62.