Steroid Plotter

These curves are simplified half-life estimates, not bloodwork. They do not tell you what to take. Read the disclaimer.

Primo (Methenolone enanthate) plotter

Primobolan Depot. Enanthate ester of methenolone; often plotted next to testosterone at a similar schedule.

t½ 4.5dTmax 2d70% parentInjectablemg

Also called Methenolone enanthate, Primobolan, Primobolan Depot, Primo E, Primo Steroid.

Compare with Test E, Mast E.

Ester fraction ~0.70; injectable primobolan uses the enanthate ester (~4.5 d).

Your cycle
Dose, ester, and frequency. The chart is remaining active amount, not serum concentration. To step a dose up, add another row of the same compound with a later start day.
t½ 4.5dTmax 2d70% parent
Peaks, troughs, and half-life
Estimated remaining active mg. Washout continues after the last dose. Mixed IU and mg protocols are not summed.

Methenolone enanthate

Peak

336 mg

Trough

267 mg

Swing

21%

~Steady state

22.5d

~Washout

24.5d

Start from a protocol
Fills the form with a common stack. Edit the numbers after. Educational sketch, not a recommendation.
Saved locally
Stored in localStorage on this device. Reload a saved protocol from this list.

No saved protocols in this browser yet.

Cycles that include this

intermediatebulkexample
Test E 500 + Primo 400
Testosterone base plus one DHT-derivative. Intermediate lean bulk.

Source: Tool-authored example

Tool-authored example. Testosterone plus Primobolan as a two-compound lean bulk sketch.

Not a first cycle.

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intermediatecutexample
Cut — Test 200 + Primo 400
Lower test with Primobolan. The diet is the cut; this is a hold-muscle sketch.

Source: Tool-authored example

Tool-authored example. Lower test plus Primobolan. The diet is the cut.

Not a first cycle.

Load in plotter