<unk>  are chemicals used for medicinal purposes which is formulated or manufactured under a name protected from competition through trademark or patent. The invented drug is usually still considered<unk>  even if the patent expired. When a patent expires, generic drugs may be developed and released legally. Some international and national governmental organizations have set up laws to enforce intellectual property to protect<unk> s, but some also highlight the importance of public health disregarding legal regulations.<unk> s affect the world in various aspects including medicine, public health and economy. Not all<unk> s have their generic replacements available. Biologics are often produced by in vivo preparation and direct extraction of substances from living organisms.Pharma is not extensively involved in searching for ready-to-sell generic biologics due to the complexity of manufacture and hurdles in extraction processes. Besides vaccines, these endogenous origin chemicals are prescribed to patients suffering from severe conditions, such as complications including asthma, rheumatoid arthritis, or cancer. Patients taking a particular brand of biologics are unable to interchange between one and another to prevent underlying exposure to more side effects and/or suboptimal treatment. It is believed that generic biopharmaceutical products will not be released in the near future until all technical difficulties are overcome. Viagra, a famous example of<unk>  on the market The table below shows some examples of pharma and their past/current<unk>  medications: Pharma<unk>  medications Pfizer Viagra (sildenafil), Comirnaty (tozinameran, co-op with BioNTech) GlaxoSmithKline Amoxil (amoxicillin), Ventolin (salbutamol) Sanofi Dupixent (dupilumab, co-op with Regeneron Pharmaceutical), Lantus (insulin glargine) __TOC__
Proprietary drug
Designer drug
Generic drug
Prescription drug
Cold medicine
Me-too drug
Hazardous drugs
Botanical drug