What are small molecule drugs?
Small molecule drugs make up around 90% of drugs on the market today. They differ from biological drugs due to their size and ability to enter cells more easily because of their low molecular weight compared to proteins.
Small molecule drugs are almost always taken as pills and tablets which can be an advantage due to the general preference for for pills over injections. However, the downsize is that the small size and simplicity of small molecule drugs can leave them open to easy replication from competitors once patents cease.
Orphan drugs have become a trend for pharmaceutical companies in recent years which have meant that