Track thymulin in Peptimes™
Thymulin is a peptide of nine amino acids, pGlu-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn. FDA's substance registry lists it as nonathymulin, also called serum thymic factor. (Source: FDA's substance registry (GSRS).)
Is thymulin FDA-approved?
No. Thymulin isn't FDA-approved, and Drugs@FDA lists no application with it as an active ingredient.
Thymulin
Also: nonathymulin, serum thymic factor, FTS, facteur thymique sérique
- Status label in the Peptimes Library
- Not FDA-Approved
- Routes in Peptimes
- SubcutaneousOther
- Updated
- 1 Nov 2026
US regulatory status
What studies have looked at
Each point says who or what was studied and what the study reported, with its source and the date we checked it. These are findings from the sources cited, not advice or a promise of any result.
- In humans
A randomised, double-blind, placebo-controlled pilot trial in 40 people with active multiple sclerosis found no significant difference in disability scores, Ambulation Index or Functional Scale. No significant side effects were recorded, and the authors concluded it was not effective.
Source: PMID 2618585, checked 1 Nov 2026
- In humans
An uncontrolled 1982 report of 3 children with immune deficiencies: infections became less frequent and less severe, immune tests improved and IgA appeared. The improvement regressed when treatment was briefly interrupted.
Source: PMID 6124716, checked 1 Nov 2026
How to track it in Peptimes
Add thymulin in My Protocols and set the schedule you already follow: days of the week, times of day and a start date. Peptimes never suggests an amount when you log or schedule a dose. Its Library entry shows the status label “Not FDA-Approved”. It is a separate Library entry from Thymalin and Thymosin Alpha-1.
- Routes: subcutaneous or Other. Choose the one that matches each dose.
- Logging: the amount you took, the route and how you feel.
- Injection sites: subcutaneous doses record the site, and Insights shows where you’ve injected and how recently. It never suggests where to inject next. Doses logged as Other skip this step.
- Reminders and history: reminders at your times, Dose History, the Calendar and CSV or JSON export work as described on the peptide tracker app page.
Peptimes is a tracking app, not medical advice. Talk to a licensed clinician about your treatment. Peptimes doesn’t sell thymulin or any other compound.
More sources
- FDA, Global Substance Registration System, Nonathymulin, checked 1 Nov 2026: its sequence of nine amino acids, its formula, C33H54N12O15, and the names thymulin and serum thymic factor.