All links here: ⁠https://hunterwilliamshealth.com/links

SS-31 continues to be one of my favorite peptides of all time, and the more data that comes out on it, the more I think every person over 25 has a use case for it.

In this masterclass, I'm breaking down everything I know about SS-31. We cover what it actually does at the cellular level, why it's the first FDA-approved mitochondrial peptide, and why it works differently than almost every other peptide out there. No receptor binding. It goes inside your cells, binds to cardiolipin, and stabilizes the structure of your mitochondria.

I walk through the three dosing tiers I use with people, my take on cycling, why I run SS-31 before MOTS-c, how to stack it with GLPs, GH peptides, and the healing peptides, and what to actually track when you're on it. I also cover the troubleshooting stuff people ask me about constantly. Why don't I feel anything? Should I cycle? What about the headaches in the first two weeks?

If you're a clinician or just researching for yourself, this is the complete user's guide.

For entertainment purposes only.

Timestamps

00:00 Intro

01:00 What this masterclass covers

03:18 Why SS-31 matters and what makes it different

03:46 FDA approval and the Forzenity brand name

04:50 Peptide foundations and how SS-31 is made

05:52 The SS-31 sequence and the Seto-Schiller naming origin

06:40 Mitochondria 101 and why ATP matters

07:28 Mitochondrial dysfunction across chronic disease

08:34 Cardiolipin, cristae, and Barth syndrome

09:34 Why SS-31 is not a direct antioxidant

10:46 How SS-31 actually works (the upstream Godfather effect)

11:12 Why no receptor means no desensitization

13:36 Who SS-31 is for (mid-30s, athletes, post-illness, metabolic dysfunction)

14:24 Who should skip it

15:34 The three-tier dosing ladder

16:54 The FDA-approved 40mg dose and diminishing returns

19:08 Dosing by goal (longevity, performance, recovery, healing)

19:48 Cycling logic and the 8-12 week framework

20:22 When to dose (morning vs night)

21:24 What to expect and when (week-by-week timeline)

22:20 Why cycle if it doesn't desensitize

24:24 SS-31 before MOTS-c (the structural engineer vs operations manager)

26:18 Reconstitution and injection technique

28:22 What to track (subjective markers and biomarkers)

29:18 Stacking with MOTS-c, Humanin, BPC, GH peptides, and GLPs

31:28 Stacking for cognition and visceral fat

32:26 Troubleshooting "I don't feel anything"

33:54 Injection site reactions

34:36 When to discontinue and the first-two-week headache window

35:52 FAQ (legality, MitoQ comparison, oral routes, intranasal)

36:54 Use cases (weight loss, long COVID, athletic performance, TRT, kids)

37:54 Research grade vs pharmaceutical cost difference

38:22 Future outlook (AMD, sarcopenia, SBT-272, oral bioavailability)

40:30 Final thoughts and where SS-31 sits in the broader picture

42:20 Closing