Traditional community use of herbal plants is highly significant, and they contribute to plant biodiversity and conservation. Natural products are essential components of complementary and alternative medicine, nutraceuticals, dietary supplements, and pharmacological bioactive metabolites of novel chemical entities. Due to the vast flora and fauna biodiversity that creates the essential chemical variety, bioactive secondary metabolites from herbal plants of various kinds are key sources and present huge prospects for medication active pharmaceuticals. In the quest for lead, phytochemical research has become increasingly popular in high throughput (HTS) screening methods. Many phytomedicines for diverse therapeutic areas have been created from herbal products, and phytochemicals of herbal extracts for traditional purposes contain numerous types of bioactive metabolites of pharmacological and pharmacotherapeutic character. The purpose of this paper is to provide insight into the extraction, isolation, and characterization of the rich medicinal plant biodiversity of potential pharmaceutical importance, as well as the major drawbacks and challenges in phytochemical extraction, isolation, and characterization in plant extracts. The extraction process, which is a critical stage in the investigation of bioactive substances in medicinal plant research, has been investigated in more depth. Following regulatory rules and diverse pharmacopoeia, it is critical to analyse the benefits and drawbacks of various extraction processes. The examination of bioactive compounds in herbal products involves the use of several phytochemical screening methods and chromatographic techniques such as TLC and HPLC, as well as non-chromatographic approaches such as Fourier Transform Infrared (FTIR) and immunoassay in some circumstances. The difficulties experienced by most pharmacy students in data mining of information on phytochemical screening and testing of biological activities in projects involving herbal plants study inspired this work. This article is also intended to provide students with knowledge on the preclinical drug discovery process in the hopes of developing a better traditional medicine/ phytomedicine.
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