A biologic drug (biologics) is a product that is produced from living organisms or contain components of living organisms. Biologic drugs include a wide variety of products derived from human, animal, or microorganisms by using biotechnology., 
Biologics are isolated from a variety of natural sources - human, animal, or microorganism - and may be produced by biotechnology methods and other cutting-edge technologies.
In contrast to most drugs that are chemically synthesized and their structure is known, most biologics are complex mixtures that are not easily identified or characterized.
Biological products often represent the cutting-edge of biomedical research. They may offer the most effective means to treat IBD., 
,  https://www.medicinenet.com/biologics_biologic_drug_class/article.htm