Science's newest and fastest-growing field is nanotechnology. The foundation of nanotechnology is made up of nanoparticles. The sizes of nanoparticles range from 1 to 100 nm. A variety of classes, including inorganic, organic, ceramic, and carbon-based nanoparticles, are used to categorise the nanoparticles. Nanoparticles are becoming a more widely used material like electronic devices to medicine in industries. Green synthesis is a feasible and environmentally acceptable alternative that produces nanoparticles using natural resources and biological processes. In addition to using environmentally friendly reducing and stabilising agents, the green synthesis approach makes use of a variety of biological resources, including bacteria, fungus, plants, and algae. The synthesis of nanoparticles has grown in importance as a means of promoting targeted drug delivery, imaging, diagnostics, and therapeutic interventions in the pharmaceutical and healthcare industries. These natural resources guarantee the biocompatibility and stability of the final nanoparticles by acting as capping agents in addition to reducing agents The creation of safer and more effective medical solutions through green synthesis has great potential to transform the nanoparticle manufacturing process. Green nanotechnology for pharmacy and healthcare is experiencing innovation which is usefulness as a resource for researchers, practitioners, and policymakers. Additionally, nanoparticles can be categorised into one, two, or three methods. The synthesis of nanoparticles using chemical, physical, and environmentally friendly methods is covered in this review. To make the nanoparticles, a variety of qualitative and quantitative techniques are applied. FTIR, SEM, and TEM are examples of qualitative techniques.