Winstrol (Injectable)
Winstrol Depot · Stanozolol Inj
Injectable stanozolol suspension; micro-crystals give a long apparent peak.
Key takeaways
- Injectable stanozolol suspension (Winstrol Depot); same DHT-derived molecule as oral Winstrol.
- ~3.4-day apparent half-life from slow-dissolving microcrystals; EOD injection.
- Still 17-alpha-alkylated: hepatotoxicity drops vs oral, but HDL suppression stays severe.
- No aromatization; joint pain is common as water and synovial lubrication drop.
Reported dosing protocols
Protocols reported in research literature and clinic/community use — informational context, not a dosing recommendation.
| Use case | Dose | Route | Frequency | Duration |
|---|---|---|---|---|
| Performance (community) | 50–100 mg | IM | EOD | 6–8 weeks |
Pharmacokinetic summary
- Model tier
- Advanced (t½ + Cmax + Tmax + F)
- Half-life
- 3.4 days
- Cmax
- 600 ng/dL
- Tmax
- 7.0 days
- Bioavailability
- 100%
- Typical dose
- 50–100 mg
Harm reduction
- Aromatizes
- No
- DHT derivative
- Yes
- Hepatotoxicity
- mild
- Injection frequency
- EOD
Frequently asked questions
Injectable vs oral Winstrol — which is easier on the liver?
Injectable, somewhat. Skipping first-pass metabolism reduces hepatic exposure, so it rates mild here versus moderate for the oral. But stanozolol is 17-alpha-alkylated either way, and the lipid impact is just as bad by injection.
Why is Winstrol Depot a water suspension?
Stanozolol base isn't esterified, so it can't dissolve in oil the way esterified steroids do. It's milled into microcrystals suspended in water; the slow crystal dissolution is what creates the multi-day depot and the long apparent peak.
How long is injectable Winstrol detectable?
Longer than most expect: labs screen for 3′-hydroxystanozolol glucuronides by LC-MS/MS, and this entry estimates a 6–9 week window because the microcrystal depot extends detection roughly 2–3× versus the oral form.
References
- PubMed (stanozolol PK)
- Soma et al., J Vet Pharmacol Ther 2007 — stanozolol PK — Equine stanozolol pharmacokinetics; the published PK data behind the calibrated curve. Human values are modeled.
Related compounds
Testosterone Enanthate
Long-acting testosterone ester; the most common TRT and cycle base. Reaches steady state in ~5 weeks.
Testosterone Cypionate
Standard US TRT ester with a slightly longer release tail than enanthate. Steady state ~4–5 weeks.
Testosterone Propionate
Short-acting ester with sharp peaks; requires frequent injection. Useful for frontloading.
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