What are Biologics? Overview and Example

What are Biologics?

By Kristi Waterworth – Updated Oct 3, 2025 at 1:52 AM | Fact-checked by Frank Bass

Key Points

Biologics are diverse, organic-based treatments like vaccines and gene therapy, requiring specific conditions for effectiveness.
Unlike small molecules, biologics show batch variability and involve higher manufacturing costs and stringent regulations.
Investing in biologics involves higher risks due to production challenges but offers potential high returns from flagship products.

Standing in line at the pharmacy, you've probably pondered the many bottles and vials containing various medications on the shelf, including biologics. These are important drugs to treat specific diseases, and are often expensive medications that act as flagship products for pharmaceutical manufacturers. Read on to better understand what biologics are and why you might invest in them.

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A bottle of pills spilled over. — Image source: Getty Images.

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About the Author

Kristi Waterworth has been a contributing real estate and financial expert at The Motley Fool, covering real estate, investing, and personal finance topics, since 2020. Kristi has been interviewed by various TV media outlets and podcasts for her real estate investing expertise – from residential real estate to digital real estate and everything in between. Kristi’s journalist career spans over 25 years, and she has written about real estate investing, homeownership, and home construction specifically for the last decade. She was also previously a licensed Realtor and general building contractor before the Great Recession and housing market collapse. She holds a bachelor’s degree in American history from Columbia College in Missouri.

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