Pedplot

Mast E plotter

Half-life estimate, not bloodwork or dosing advice. Disclaimer.

t½ 4.5dTmax 2d73% parentestimate

The prefilled numbers are an example input to draw the curve, not a dose; Pedplot does not suggest one. To step a dose up, add another row of the same compound with a later start day.

Peaks, troughs, and half-life
Not a blood level. The chart shows the estimated milligrams of the drug still in the body, so it will not match a lab result in ng/dL. How the model works. Washout continues after the last dose. Mixed IU and mg protocols are not summed.

Drostanolone enanthate

Peak

350 mg

Trough

278 mg

Swing

21%

~Steady state

24.5d

~Washout

25d

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Masteron enanthate. Longer ester of the same parent as Mast P. A 200 mg dose is about 146 mg of drostanolone, and that is what the line draws. Also called Drostanolone enanthate, Masteron, Masteron E, Mast. The half-life is an estimate. Methodology.

Half-life4.5d
Time to peak2d
Parent hormone73%
Example input200 mg
Example frequencytwice a week
Example length12 weeks
Data qualityLow

No human PK study for drostanolone esters; 4.5 d and Tmax 2 d are community estimates. 73% drostanolone by weight (PubChem MW). How the model works.

The example curve

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.

Mast P3.7 days shorter (19h vs 4.5d), and 84% parent hormone instead of 73%.

Sources

  1. Computed (PubChem). PubChem molecular weights, drostanolone enanthate: 304.5 ÷ 416.6 = 0.73
  2. Community estimate. Community estimate; no human PK study found