Plants are the source of various photochemicals; metabolites are used in medicinal and environmental sectors as well as being widely used in commercial and pharmaceutical products. Although they produce a number of medicinal products, either already on the market or under trial, the amounts obtained from plant sources are very minute or difficult to synthesize at an industrial level due to the complex chemical composition and chirality exhibited by these compounds. However, plant cell cultures offer a good alternative for the consistent production of desired secondary metabolites under the influence of precursors and elicitors. In this review, we discuss the various aspects of secondary metabolites, production synthesis, and sources of medical products from plant sources.

• Naturally, secondary metabolites scopolamine and hyoscyamine exhibited a lesser yield from leaf extract or callus induced from stems. • Supplementation of saccharides (sorbitol and mannitol) callus induct media increase significant amount secondary metabolites in stem derived calli of Datura inoxia. • The secondary metabolite hyoscyamine from Datura inoxia exhibited potent antimicrobial properties.