Steroid Plotter

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

Deca (Nandrolone decanoate) plotter

Long nandrolone ester. About 64% parent hormone. Weekly dosing still accumulates for several weeks and washes out slowly after the last pin.

t½ 7.5dTmax 4d64% parentInjectablemg

Also called Nandrolone decanoate, Deca Durabolin.

Compare with NPP.

Ester fraction ~0.64; half-life ~7.5 d from the steroidplot community PK set.

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 7.5dTmax 4d64% parent
Peaks, troughs, and half-life
Estimated remaining active mg. Washout continues after the last dose. Mixed IU and mg protocols are not summed.

Nandrolone decanoate

Peak

269 mg

Trough

203 mg

Swing

24%

~Steady state

37.5d

~Washout

41.5d

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.

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Cycles that include this

intermediatebulkcommunity
Test E 500 + Deca 400
Weekly Test E 250 mg E3.5D with nandrolone decanoate 400 mg weekly.
Source: r/steroids cycle-backbone examples (public)

Backbone-thread 2nd cycle is 500 mg test + 500 mg nandrolone. We plot 500/400 so the chart is the classic two-compound bulk, slightly under that comment.

Not a first cycle.

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intermediaterecompexample
NPP vs Deca
Same ~200 mg/week of nandrolone as NPP EOD versus Deca weekly.

Source: Tool-authored example

Tool-authored example. Ester comparison, not a community stack to run together.

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