Tirzepatide Becomes The Top-Selling Medication Worldwide

Plus a new video out on Spotify!

Author

Hunter Williams
October 31, 2025

Happy Friday!

I’m keeping today’s email short and sweet (pun intended) as Taylor and I are gearing up to give away candy to some trick-or-treaters tonight!

I released a new video this morning on Peptide Replacement Therapy.

PRT is the concept of replacing endogenous peptides, as we do with hormones, periodically throughout the year.

Hopefully, we as a community can make this more commonplace and eventually a standard practice!

Peptide Replacement Therapy | The Future of Anti-Aging Medicine

The Hunter Williams Podcast · Episode

open.spotify.com/episode/0uLvXmHfqMtIsicXgkeq1D

Remember, BioLongevity Labs is running their Halloween Sale this week. Until tonight at midnight PST, you can get 20% off any product in the store, and an additional 15% off when you use code HUNTERW at checkout.

Also, just a fun fact for Friday.

Tirzepatide is now the world's top-selling medication by sales volume.

Eli Lilly’s weight loss and diabetes drug tops Keytruda as world’s best-selling medicine

Merck, which has claimed bragging rights as the maker of the world’s best-selling drug, Keytruda, since 2023, has officially been surpassed by Eli Lilly.

www.statnews.com/2025/10/30/eli-lilly-zepbound-mounjaro-bestselling-obesity-drug

What does this have to do with us?

I have no idea.

But it does appear that GLP-1s are here to stay and represent the future of medicine as we know it.

I can’t wait to see how this will impact humanity's collective health in the future.

This is just the beginning!

I hope you and your family have a Happy Halloween!

Best,

Hunter Williams