Thymalin and Vilon are each a short bioregulator peptide.
Bioregulators are taken in short courses and rest almost entirely on Russian research that has not been replicated elsewhere.
Same target, different schedules: Thymalin 10-day courses; Vilon courses.
| Comparison | Thymalin | Vilon KE · Lys-Glu |
|---|---|---|
| How it works | How it works Thymalin is an extract from the thymus, the gland that trains immune cells and shrinks progressively from adolescence onward. | How it works Vilon is two amino acids long, lysine and glutamic acid. It is among the shortest compounds on this site. |
| What it is | A thymus peptide taken in courses to refresh immune function and aging. | A tiny bioregulator taken in courses for immunity and aging, with thin evidence. |
| Status | Research only | Research only |
| Typical dose | 5–10 mg per day | — |
| How often | 10-day courses | Courses |
| Stays active | Not established | Nothing published |
| Dose comes from | Community practice | No established range |
| Cycled? | Taken in 10-day courses Community practice | Taken in courses Community practice |
| What it does | ||
| Drug class | Thymic bioregulator | Di-peptide bioregulator |
| Used for | A thymus bioregulator taken in short courses to refresh immune function and support healthy aging. It is popular in longevity circles. | A tiny two-part bioregulator taken in courses for immune balance and healthy aging. |
| Receptors hit | — | — |
| Numbers | ||
| Full dose line | 5 up to 10 mg per day (start low, increase slowly) | Varies (course-based) |
| Why that cycle | Course dosing is how this one is normally used. Where the course length comes from is the thing to check: for most compounds in this pattern it is convention rather than a tested schedule. | Course dosing is how this one is normally used. Where the course length comes from is the thing to check: for most compounds in this pattern it is convention rather than a tested schedule. |
| Weight / effect | Not measured in a trial | Not measured in a trial |
| Chain length | Not disclosed | 2 residues |
| Common vial | 10 mg | 10 mg |
| Before you start | ||
| Route | Under the skin (subcutaneous) | Under the skin (subcutaneous) |
| Do not use if | No formal Western contraindications established Pregnancy Immunosuppressive therapy, as a precaution | Pregnancy or breastfeeding Any prescription medicine you take regularly, without checking for interactions first Anyone who wants established safety data, because none exists for this compound in humans |
What separates them
Proof behind the dose. Every dose here comes from community practice. Not one is backed by a published human study, which is worth knowing before you read the numbers as if they were equivalent.
What doesn't differ: They are both taken the same way (under the skin) and aimed at the same thing (immune & aging). Neither has a measured effect size from a published trial, so there is no number to rank them on.
What people actually report
Thymalin
- Little Western human evidence.
- Signs of an allergic reaction
- Worsening of an autoimmune condition
Vilon
- Little human evidence.
- Spreading hives, swelling of the face or throat, or trouble breathing, which can happen with any injection and is a medical emergency
- Redness, heat, or pus at the injection site, which can signal infection
Side effects are what users and trials report most often, not a complete list. Anything sudden, spreading, or breathing-related is an emergency regardless of which compound caused it.
People also compare
This comparison does not cover cost, long-term safety, or how you personally will respond. Effect figures come from separate trials in different populations and are not always directly comparable to each other. Nothing here is medical advice or a recommendation to use any of these. Talk to a clinician about your own situation.