Follistatin 344: Research, Dosing, and Where to Buy in 2026
A research-first profile for Follistatin 344 (Fst344), aggregating mechanism notes, transcript dosing mentions, vendor recommendations, and PubMed-indexed literature without presenting medical guidance.
Follistatin 344 is a research compound profiled here from named-expert transcripts and peer-reviewed literature, without medical guidance. As of July 2026, The Peptide Wiki aggregates 15 PubMed-cited papers, 2 attributed expert mentions, and 2 transcript dosing protocols for Follistatin 344, each linked to its source.
- Also indexed as Fst344.
- 2 aggregated dosing-protocol mentions from source transcripts.
- 15 PubMed-indexed citations listed in the research table below.
- 0 vendor recommendations captured from named experts.
- Evidence level in this entry is marked as anecdotal.
What is Follistatin 344?
Research compound aggregated from creator and literature mentions. No direct disease-treatment claims are made on this page.
Experts on background and overview · 1 cited mention
"YK11 is a steroidal SARM and it works unlike Austrian and RAD 140... and it has a unique characteristic that increase folstatin levels and has some um you know myostatin inhibiting effects"
What is Follistatin 344 researched for?
Myostatin-inhibitor peptide; modest 2-4% benefit not deemed worthwhile by Steve.
Experts on uses and effects · 1 cited mention
"I I used folstatin 344 that raises folatin levels that's quite potent honestly... is it really worth it to inhibit myostatin with some sort of followatog? In my opinion, no. So, you get a benefit maybe two, three, 4%."
Follistatin 344 Dosing Protocols
The entries below are transcript-derived dosing mentions. They are preserved for research context and are not medical advice.
| Speaker | Source | Timestamp | Protocol | Evidence |
|---|---|---|---|---|
| Vigorous Steve | GH Secretagogues Vs Real GH, Managing Estradiol On Cycle,... | 00:59:40 | Steve reported (anecdotal): 1mg full vial follistatin 344 per week, cycled: 1 week on / 1 week off / 2 weeks on / 1 week off; caused severe lethargy with underwhelming muscle gain | anecdotal |
| Vigorous Steve | Best PED Use (Competitive vs. Lifestyle) & All Things to Avoid Death... | 00:39:53 | Whole vial daily - but not considered worth the cost/effort | anecdotal |
Where to Buy Follistatin 344 in 2026
No tracked vendor recommendations for Follistatin 344 yet. See our vendor directory.
Side Effects and Safety
Anecdotal reports and study-level observations vary by route, dose, and individual. This page does not provide medical advice. Consult a qualified clinician before any research use.
What Experts Say
1 expert across our source library discuss Follistatin 344. Each entry is that expert’s most context-rich mention: click to watch it at the exact timestamp in the original video. Quotes are also emitted as Schema.org Quotation JSON-LD for AI assistants.
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“YK11 is a steroidal SARM and it works unlike Austrian and RAD 140... and it has a unique characteristic that increase folstatin levels and has some um you know myostatin inhibiting effects”
See 1 more expert mention →
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“I I used folstatin 344 that raises folatin levels that's quite potent honestly... is it really worth it to inhibit myostatin with some sort of followatog? In my opinion, no. So, you get a benefit...”
User Reviews
User reviews aggregator coming Q3 2026 (Reddit + YouTube comments + Discord research notes). Until then, see the expert quote section above and PubMed citations below.
Research Efficacy Snapshot
Published efficacy percentages cited in PubMed trials and named-expert reports about Follistatin 344. Each line links to the original source.
- "0.92 ± 0.20; p = 0.010), as well as higher proportions of tender joints ≥4 (48% vs." · Gonzalez-Ponce F et al, 2025 PubMed
- "16%; p = 0.008), and higher disease activity scores (3.8 ± 1.5 vs." · Gonzalez-Ponce F et al, 2025 PubMed
- "The lean percentage of lean meat was significantly higher in the F1 generation of TG pigs (72.95 ± 1.0 %) than in WT pigs (69.18 ± 0.97 %) (N = 16, P < 0.05)." · Chang F et al, 2017 PubMed
- "The similarity of its deduced amino acid sequence to these of other mammalian species was greater than 95%." · Sugawara Y et al, 1999 PubMed
- "Initial studies demonstrated that activin decreased transcription of -846 and -180 human alpha-subunit-luciferase constructs by about 30%, but that inhibin and follistatin were without effect." · Attardi B et al, 1995 PubMed
- "The luciferase activity of the -507-base pair construct was decreased by 60-70% in the presence of activin, and follistatin prevented this decrease." · Attardi B et al, 1995 PubMed
- "Secretion of free alpha-subunit by alpha T3-1 cells decreased 10-50% after exposure to activin for approximately 20 h, and steady state levels of alpha-subunit messenger RNA (mRNA) decreased by about 20-25% after 24-72 h." · Attardi B et al, 1995 PubMed
- "The predicted amino acid sequence of bovine FS has overall sequence homologies of 98% with ovine FS and 97% with human FS." · Saleh M et al, 1994 PubMed
- "So, you get a benefit maybe two, three, 4%." · Steve on "Best PED Use (Competitive vs. Lifestyle) & All Things to Avo" @ 39:15
Research and Studies
15 PubMed-indexed papers reference Follistatin 344. Top 15 shown.
Legal Status
Follistatin 344 is presented here as a research compound. FDA approval status, scheduling, WADA status, and state-specific telehealth rules may apply. Always verify current regulatory status. Last verified: 2026-07-09.
Frequently Asked Questions
Is Follistatin 344 FDA-approved?
Follistatin 344 is presented on this page as a research compound. FDA approval status, scheduling, and state-specific rules may apply and change. Verify current regulatory status before any decision.
What dosing is reported for Follistatin 344?
This page aggregates 2 dosing-protocol mention(s) from named-expert transcripts, each linked to a verbatim source timestamp. See the Dosing Protocols table above. Mentions are anecdotal, not medical advice.
How much research has been published on Follistatin 344?
15 PubMed-indexed paper(s) reference Follistatin 344 in our current research feed. See the Research and Studies section above for citations.