Half-life estimate, not bloodwork or dosing advice. Disclaimer.
Primobolan Depot. Enanthate ester of methenolone, the same ester as testosterone enanthate. A 200 mg dose is about 146 mg of methenolone, and that is what the line draws. Also called Methenolone enanthate, Primobolan, Primobolan Depot, Primo E. The half-life is an estimate. Methodology.
| Half-life | 4.5d |
|---|---|
| Time to peak | 2d |
| Parent hormone | 73% |
| Example input | 200 mg |
| Example frequency | twice a week |
| Example length | 12 weeks |
| Data quality | Low |
No human PK study for methenolone enanthate; 4.5 d and Tmax 2 d are community estimates. 73% methenolone by weight (PubChem MW). How the model works.
200 mg twice a week for 12 weeks. With a 4.5d half-life, it levels off around day 24.5. The row runs longer than that, so the plateau is on the chart. Between doses it runs from about 278 to 350 mg, a swing of 21%. Each dose is a hump, and the floor stays up. After the last dose, the tail takes about 25 days to fall to a few percent.