Thymulin

Thymulin is a zinc-bound nonapeptide hormone that modulates T-cell maturation and immune responses. It has no FDA-approved indication, so all human use is off-label or compounded, and the existing research is preclinical and animal-only rather than human. People who run it report doses spanning 500 µg to 10 mg, most commonly 1 mg daily, though timing and cycling are usually left unstated. The main thing to weigh before starting: there is no approved use and no human trial base behind it.

Data last updated

ClinicalResearchDepthClinicalResearchEfficacyno dataClinicalResearchSideEffectsno dataAnecdotalEfficacyAnecdotalSideEffectsPrice0.43.02.82.0

Measured on 4 of 6 axes

Research Evidence

Evidence shape

Thymulin currently exists as an animal-only research peptide, as there are no published human clinical trials or registered studies to support its use in any therapeutic indication. The existing literature is restricted entirely to preclinical and mechanistic research, providing no data on safety, efficacy, or dosing in human subjects. Because no trials have reached the stage of human testing, the clinical profile remains undefined and lacks the necessary evidence to support any specific application.

Depthhow much
0 registered trials
Breadthhow many areas
1 indication mapped
1 animal-only
Qualityhow rigorous
No completed trials
Breadth and depth24 rows captured
Human
direct clinical signal
0
Animal
translational support
12
In vitro
mechanistic support
12
HighMediumLow

Anecdotal efficacy

Thymulin side effects

Clinical research side effects

Clinical safety table not projected yet.

Anecdotal side effects

Price

Full buying guide →
1
Limitless Life Nootropics
US
10 mg
$19.99
$2/mg
2
XL Peptides
UK
10 mg
$21.46
$2.15/mg
3
BioEdge Research Labs
--
10 mg
$38.25
$3.83/mg
4
Raccoon Peptides
GB
10 mg
$38.93
$3.89/mg
5
Amc Essentials
US
10 mg
$39.99
$4/mg
6
Alpha Omega Peptide
USA
20 mg
$84.00
$4.2/mg

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Thymulin dosing & protocol

How Thymulin is dosed across research, clinician, and community sources — each evidence tier kept separate so the dose range, frequency, timing, and cycling stay visible without flattening different levels of evidence.

Research trials
Published clinical-trial protocols
Typical dose
—
0
2 mg
4 mg
6 mg
8 mg
10 mg
no dose captured for this tier yet

No structured protocol details captured for this tier yet.

Clinician practice
Doctor & published-protocol guidance
Typical dose
—
0
2 mg
4 mg
6 mg
8 mg
10 mg
no dose captured for this tier yet

No structured protocol details captured for this tier yet.

Anecdotal
Community-reported real-world use · n = 12
Typical dose
1 mg500 µg – 10 mg
typical
0
2 mg
4 mg
6 mg
8 mg
10 mg
distribution of 14 reported doses · darker = more
By reported cadence· tap a row to filter the chart
Frequency
mostly daily
Route
subQ

Most community users take Thymulin subcutaneously at about 1 mg each day, with doses ranging from 500 µg to 10 mg; a smaller number dose weekly and several did not specify a schedule.

12 sources

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