INTRODUCTION:

Herbal medicines have historically seen exceptional global growth because of their superior therapeutic benefits and lack of side responses as compared to contemporary medications. Physicians and patients highly acknowledge the value of medicinal plants, as they hold immense potential in providing extensive benefits to society and humanity, specifically in the medical field. The utilization of herbal treatment has proven to augment therapeutic benefits by promoting decreased drug toxicity and adverse side effects while simultaneously enhancing bioavailability¹. Natural items and herbal medicines have been utilised to treat illnesses since the beginning of civilization. Herbal medicines, in contrast to popular allopathic methods, contain thousands of different ingredients that all fight disease at once².

Since all of the active ingredients work together synergistically to increase the therapeutic value, the activity of herbal medicines depends on how well they perform overall. Each active consequence is related to the others and plays a significant role. Unfortunately, the majority of medications made from herbs have an insoluble nature that reduces absorption and increases system clearance, necessitating repeated administrations or greater doses, which renders the medication an unsuitable candidate for therapeutic usage³.

Using nanotechnology when it comes to medication delivery systems for herbal medicine, in particular, has a potential future for boosting activity and resolving concerns relevant to medicinal plants, according to this strategy⁴. Natural items and herbal medicines have been utilised to treat illnesses since ancient times⁵. Herbal treatments are pure natural substances derived from plants. Practically speaking, herbal treatments have been used since the dawn of civilization by humans. Scientists are creating new medications now and will continue to do so over time in various ways. All the same, the origins of these treatments have always been found in traditional or herbal cures and natural ingredients⁶. According to data on the local origin of new pharmaceuticals from 1981 to 2007, over the basis for 50% of the medications is natural components.⁷ Natural products are more easily absorbed than manufactured medications, it has been demonstrated. Herbal remedies can aid in the patient's better management of their own illnesses, even though they are not intended to treat diseases effectively. Also, it can raise life quality by providing dietary supplements⁸. The pharmaceutical industry collapsed out when techniques to make synthetic substitutes for many medications derived from plants were developed. Pharmaceutical companies are currently working on developing cures and enhancing the distinctiveness of plant-based medications or herbal remedies⁹.

Figure 1: Transport of drug

In the past, herbal medicines were disregarded as a source for developing new formulations, primarily due to insufficient scientific validation and processing challenges. The scientific challenges of combining herbal products into novel drug delivery systems, such as solid lipid nanoparticles, matrix systems, nanoparticles made of solid lipids, etc., can now be successfully met because of to modern phyto-pharmaceutical research. Innovative drug delivery techniques can boost the effects of herbal medicine, boosting its potency in a superior way. To achieve this, new drug delivery systems must be designed and implemented to incorporate herbal constituents, ultimately leading to better health outcomes¹⁰.

The Nano-Drug Delivery System For Herbal Extract:

Delivering components in a consistent manner is essential in phototherapy and, to accomplish thisa scientific strategy is necessary. Formulating novel drug delivery systems (NDDS) for herbal constituents is a viable solution to this problem. These NDDS help to reduce the need for repeated administration, ultimately leading to improved patient compliance. Additionally, NDDS can enhance therapeutic value by minimizing toxicity and increasing bioavailability¹¹. For ideal performance, carriers should meet two primary requirements:

(1) Delivering the drug at a rate that aligns with treatment protocol, and

(2) Targeting the intended location of action for the herbal medicine’s active ingredients.

For herbal medications, it provides a number of benefits, such as greater dissolution and bioavailability, protection from harmful effects, improved stability, and defense against physical and chemical deterioration. Therefore, in the future, nanosized NDDS of herbal medications may enhance activity to deal with problems with plant-based treatments¹². Therefore, using herbal treatments in an NDDS will boost the usage of herbal treatments that emerge to treat a variety of chronological disorders¹³

NANOPARTICLES:

The size range of nanoparticles used in medicine is 1nm to 100nm. These are created by diverse physical or chemical processes and have certain characteristics¹⁴. A particle is a tiny item that functions as a single entity for the purposes of movement and activity in nanotechnology. The primary building block of nanotechnology is thought to be nanoparticles. The synthesis of environmentally acceptable nanoparticles that don't generate harmful wastes has been a major concern in recent years. Only biological synthesis processes, which are secure and an alternative to traditional physical and chemical techniques, may do this. The majority of the usage of herbal and medicinal plant extract in the synthesis of stable nanoparticle dispersion, as opposed to gold and silver nanoparticles synthesis, has been in the synthesis of these materials.

Figure 2: Nanoparticles

To be more precise, nanotechnology is the design and production of substances at the molecular and atomic level. Nanotechnology describes the development of structures up to several hundred nanometers in scale using both top-down and bottom-up engineering of individual parts¹⁵.

CHARACTERSTICS OF NANOPARTICLES:

1. Nanoparticle suspensions are conceivable as the solvent-particle surface interaction is strong enough to overcome variations in density.

2. A driving force for diffusion is provided by the large surface area to volume ratio of nanoparticles.

3. Janus particles, which are nanoparticles that are half hydrophilic and half hydrophobic, are particularly useful for stabilizing emulsions¹⁶.

Health Effects of Nanoparticles:

· Nanoparticles are tiny particles that may enter the body of a human in multiple ways.One of the common ways is via the lungs, where they can rapidly move into the bloodstream. Once in the bloodstream, they can be transported to vital organs including the blood-brain barrier.

· Apart from the lungs, nanoparticles can also be absorbed by the intestinal tract, which can lead to a systemic distribution throughout the body.

· Additionally, they can enter the body through the skin, particularly through wounds, abrasions, or other disruptions on the skin surface.

· The different ways nanoparticles enter the body have raised concerns about their potential health effects. While some nanoparticles have been found to have beneficial properties in medicine, others may have adverse effects on human health. Therefore, further research is needed to better understand the interaction of nanoparticles with the human body¹⁷

Herbal Formulations: Need For Nano- Sized Delivery System

For herbal treatments, a Nano-sized delivery mechanism is required because For the following reasons, Nano-sized herbal delivery systems were chosen to solve the shortcomings of the conventional herbal drug delivery systems: -

· Due to their unique size and large loading capabilities, it appears that they can carry medications in high quantities to receptor locations.

· Nano formulation can be utilised to deliver herbal medication directly to a specific organ, enhancing drug delivery, efficacy, and safety.

· They increase penetration and retentivity, meaning that they pass the barrier more readily due to their tiny size and are more likely to remain because of inadequate lymphatic drainage, as in tumors.

· Herbal medicines can be turned more soluble with the use of nanoparticles, and they can also be utilised to help customize the medication¹⁸.

Techniques Of Nano Herbal Formulations:

The techniques commonly used for the Nano formulations are:

· High-pressure homogenization method

· Complex coacervation method

· Co-precipitation method

· Salting out method

· Nano precipitation method or solvent displacement method

· The solvent emulsification diffusion method

· Supercritical fluid method

· Self-assemblymethod.

Figure 3: Different Methods for Synthesis of Nanoparticles¹⁹

· High-pressure Homogenization Method:

In this method, the lipid is pushed under intense shear stress with high pressure, causing particle disruptions down to the sub-micrometer or nanometer range. The large-scale production of solid lipid nanoparticles, parenteral emulsions, solid lipid drug conjugates, and nanostructured lipid carriers can all be accomplished using the high-pressure homogenization method²⁰.

· The solvent emulsification diffusion method:

In this method, an oil face containing oil and polymer is first emulsified with the aqueous phase, which contains stabilizer, in a high shear mixer, to produce an o/w emulsion. After that, water is added to help the organic solvent disperse and create nanoparticles²¹.

· Coprecipitation Method:

The coprecipitation method is a version of the intensive coacervation method used to create core-shell nanoparticles. The weakly water-soluble approach has reportedly been replaced by this one, which offers better dispersion stability.

· Salting Out Method:

This approach is based on the observation that adding an electrolyte reduces the solubility of a known electrolyte in water²¹.

NANO HERBAL FORMULATIONS:

A number of Nano-phytomedicines are made from plant extracts or the active ingredients found in plants. A nanomedication delivery technology improves bioavailability and reduces toxicity and side effects. The following are the directions for some of the commercialized Nano herbal medicines:

1. Nanoformulation of Curcuma gel²²

· Formulation: Nanocapsules

· Active ingredients: Curcumin, turmeric.

· Applications: Better immunity, BetterBrain health.

· Activity: Better Inflammatory response.

· Preparation process: Self-assembly procedure.

· Administration route: Oral.

2. BiotinSesbania Grandiflora²³

· Formulation: Sesbania Grandifloratablets

· Active ingredient: Sesbania Grandiflora powder.

· Application: Reduce hair fall, Damaged hair repair

· Biological activity: Dietary supplement vitamin B7

· Preparation process: Emulsion solvent evaporation method.

· Administration route: oral.

3. Quercetin Nano capsules²⁴

· Formulation: Quercetin capsules.

· Active ingredient: Quercetin

· Application: Immune health, Dietary supplement.

· Biological activity: Anti-oxidant.

· Administration route: Oral.

Prospects of Nano Herbal Formulations:

Herbal remedieshave the ability to increase pharmacological activity and deal with the complications of pure herbal. Although, there are still a lot of obstacles to overcome before clinically effective medicines may be applied in this area. The current obstacles to turning these technologies into treatments include tests of novel techniques to manage nanomaterials interact with biological system, influencing their functions. The ability of a scale-up procedure that swiftly brings novel therapeutic techniques to market and the potential for developing a multifunctional system to meet various biological and therapeutic requirements are newer difficulties in the development of medicine delivery system based on Nano technology²⁵.

The creation of engineering nanoparticles with significant biomedical applications has created new therapeutic prospects and challenges. The cornerstones of cutting-edge Nano medical devices to be employed for drug delivery and discovery are then likely to be no particles. Nano toxicology has developed as a new area of technology, Nano-particle research is being done since it is possible that these particles will have toxicological effects. Thus, an evaluation of these particles potential toxicological and environmental effects must be conducted concurrently with the creation of innovative nanoparticles for pharmacology, therapeutics, and diagnostics. Because nanoparticles of particulate matter have already damaged the biosphere, care should be made to avoid introducing any new environmental hazards through purposely produced nanomaterials. Modern applications of nanotechnology in NDDS include monitoring the post-administration changes in drug composition inside the bodily systems and potentially improving diagnosis and treatment. Computer-aided drug design is another significant development that deserves mention here. It provides a lot of space for the creation of this kind of cutting-edge system, which makes it possible to design and create drugs and delivery systems with greater accuracy and quality than is possible using conventional techniques.

As nanotechnology has quickly developed appealing pharmaceutical therapies that will improve people’s health, utilizing herbal remedies in it will expand its potential for the treatment of many chronic diseases and health advantages. The current medicine delivery system’s significance will increase owing to Nano carrier.

Despite the widespread recognition of the potential of nanomedicine and nano-drug delivery systems in shaping the future of healthcare, their actual impact, particularly in the field of cancer therapy and diagnosis, is currently quite limited. One key area of future research focuses on identifying fundamental markers of diseased tissues, including crucial biological indicators that enable precise targeting without disrupting normal cellular processes. As the global demand for more accurate medicines and diagnostics continues to grow, the prospects for a more intelligent and widespread application of nanomedicine and nano-drug delivery technology appear promising.

There has been great excitement surrounding the concept of developing nanorobots and nanodevices for tissue diagnosis and repair, which could be controlled externally. However, this remains a futuristic area of research and has not yet become a reality. Alongside the potential benefits of nanomedicines, it is also important to consider the potential risks they may pose to both humans and the environment. Extensive and long-term studies are necessary to assess the possible acute or chronic toxicity effects of new nanomaterials on humans and the environment. Additionally, as nanomedicines become more popular, research is needed to ensure their affordability. Lastly, the regulation of nanomedicines, as discussed previously, will continue to develop in tandem with advancements in nanomedicine applications.

REFERENCES:

1. Patil RY, Patil SA, Chivate ND, Patil YN. Herbal drug nanoparticles: Advancements in herbal treatment. Research Journal of Pharmacy and Technology. 2018; 11(1):421-6.doi: 10.5958/0974-360X.2018.00078.1

2. Singh RP, Singh SG, Naik H, Jain D, Bisla S. Herbal excipients in novel drug delivery system. Int J Comprehensive Pharm. 2011; 2:1-7.

3. Yadav D, Suri S, Choudhary AA, Sikender M, Hemant BN, Beg NM. Novel approach: Herbal remedies and natural products in pharmaceutical science as nano drug delivery systems. Int J Pharm Tech. 2011; 3(3):3092-116. doi 10.46692/ijpt.2011.v3i4.197.

4. Goyal A, Kumar S, Nagpal M, Singh I, Arora S. Potential of novel drug delivery systems for herbal drugs. Indian journal of pharmaceutical education and research. 2011 Jul 1; 45(3):225-35.

5. Etheridge ML, Campbell SA, Erdman AG, Haynes CL, Wolf SM, McCullough J. The big picture on nanomedicine: the state of investigational and approved nanomedicine products. Nanomedicine: nanotechnology, biology and medicine. 2013 Jan 1; 9(1):1-4. doi: 10.1016/j.nano.2012.05.013.

6. Newman DJ, Cragg GM, Natural products as sources of new drugs over the last 25 years. J Nat Prod 2007; 70: 461-77.

7. Butler MS. Natural products to drugs: natural product-derived compounds in clinical trials. Natural product reports. 2008; 25(3):475-516. doi: 10.1039/b514294f.

8. Shekhawat MS, Manokari M, Kannan N, Revathi J, Latha R. Synthesis of silver nanoparticles using Cardiospermum halicacabum L. leaf extract and their characterization. J Phytopharmacol. 2013; 2(5):15-20.doi: 10.25075/phyto.v2.i1.50.

9. Charlish P. Traditional remedies: latter day medicines. Scrip World Pharmaceut. 2008(3351):31-4.

10. Jana U, Pal S, Mohanta GP, Manna PK, Manavalan R. Nanoparticles: A Potential Approach for Drug Delivery. Research Journal of Pharmacy and Technology. 2011; 4(7):1016-9.

11. Choubey A, Bajpai P, Jain S. Nanomedicines based Drug delivery system and their significant role in Herbal Formulations: A Review. Research Journal of Pharmacy and Technology. 2020; 13(10):5034-9. http://dx.doi.org/10.5958/0974-360X.2020.00881.1

12. Indalkar YR, Pimpodkar NV, Godase AS, Gaikwad PS. A compressive review on the study of nanotechnology for herbal drugs. Asian Journal of Pharmaceutical Research. 2015; 5(4):203-7. http://dx.doi.org/10.5958/2231-5691.2015.00031.3

13. Wu XY, Lee PI. Preparation and characterization of thermal-and pH-sensitive nanospheres. Pharmaceutical research. 1993 Oct; 10:1544-7. https://doi.org/10.1023/A:1018900114881

14. Krishnan PR, Sivakumar R. Nanotechnology: Modern Formulation and Evaluation Techniques-An Overview. Research Journal of Pharmacy and Technology. 2019; 12(8):4039-44.http://dx.doi.org/10.5958/0974-360X.2019.00696.6

15. Birajdar GO, Kadam VS, Chintale AG, Halle PD, Nabde MK, Maske KS. A Comprehensive review on nanotechnology. Research Journal of Pharmacy and Technology. 2013; 6(5):486-95.

16. Vollath D. Nanomaterials an introduction to synthesis, properties and application. Environmental Engineering and Management Journal. 2008 Nov 1; 7(6):865-70.

17. Kumar PR, Vijaya LA. An overview on nanobased drug delivery system. Research journal of Pharmacy and technology. 2020; 13(10):4996-5003.http://dx.doi.org/10.5958/0974-360X.2020.00875.6

18. Sanghi DK, Tiwle R. Herbal drugs an emerging tool for novel drug delivery systems. Research Journal of Pharmacy and Technology. 2013; 6(9):962-6.

19. Aggarwal D, Kamal, Choudhary M, Agarwal G, Kumar A, Sharma D. Understanding of phyto-nanomedicine for the management of Inflammation and wound healing: an outlook. International Journal of Pharmaceutical Sciences and Research. 2023; 14(10): 4713-23. http://doi.org/10.13040/IJPSR.0975-8232.14(10).4713-23

20. Xalxo N, Naha A, Dhoot A, Priya J. Nanocrystals: A newer technological advancement in drug delivery. Research Journal of Pharmacy and Technology. 2018; 11(4):1685-90.http://dx.doi.org/10.5958/0974-360X.2018.00314.1

21. Choudhury A, Laskar RE, Deka D, Sonowal K, Saha S, Dey BK. A review on nanoparticle: Types, preparation and its characterization. Research Journal of Pharmacy and Technology. 2021; 14(3):1815-22. http://dx.doi.org/10.5958/0974-360X.2021.00322.X

22. Nutriherbs.in

23. https://www.zeroharm.in>products.

24. https://in.iherb.com/pr/swanson-querce

25. Sharma AT, Mitkare SS, Moon RS. Multicomponent herbal therapy: A review. Int J Pharm Sci Rev Res. 2011; 6:185-7. doi: 10.1012/IJPSRR.0975-8232.

Received on 28.06.2023 Modified on 18.10.2023

Research J. Pharm. and Tech 2024; 17(2):934-938.

DOI: 10.52711/0974-360X.2024.00145