Anavar (Oxandrolone) — Dosing, Cycles, Half-Life & Side Effects

Anavar (Oxandrolone) is an oral anabolic-androgenic steroid with a half-life of 8-9 hours. Mild oral steroid for cutting and lean gains. Primary risks include liver stress typical of 17α-alkylated orals. This page is educational harm-reduction reference compiled from peer-reviewed literature — not medical advice, not an endorsement, not a recommendation to use. Consult a licensed clinician before any decision.

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Quick Facts

Class	Orals
Half-life	8-9 hours
Detection window	21 days
Aromatization	No
Hepatotoxicity	Medium
Suppression	5/10
17α-alkylated	Yes
Administration	oral

Typical Dosing Ranges

Common dose range: 20-50mg/day

Cycle length: 6 weeks max

Time to steady state: ~2 days

Dose ranges are compiled from published pharmacokinetic studies and community-reported usage. Where a value is community-reported rather than clinically studied, this page and its structured data flag it. Lower end of any range is always the safer starting point.

Stacking Considerations

Do not stack with another 17α-alkylated oral. Dual-17αα stacking is prohibited in StackItSmart and unsafe for the liver.

PCT Requirements

This compound causes clinically meaningful HPTA suppression. Post-cycle therapy is recommended.
Depot clearance estimate: ~2 days post-last-dose before SERM start (5 × apparent depot half-life of 9h).
Never stack two SERMs. Extend a single SERM (tamoxifen OR enclomiphene/clomiphene) rather than combining.
Use the cycle planner to generate a full protocol based on your complete stack, not this compound alone.

Side Effect Profile

Liver toxic
Expensive
Hair loss
Suppression

Known Interactions

Anavar (Oxandrolone) + Dianabol (Methandrostenolone)
major — hepatotoxic
Two oral steroids with significant hepatotoxicity. Combined liver stress is multiplicative.
Recommendation: Never combine multiple 17-alpha alkylated orals. Choose one or use with injectable.
Monitor: AST, ALT, GGT, Bilirubin
Anavar (Oxandrolone) + Winstrol (Stanozolol)
major — hepatotoxic
Both are 17-alpha alkylated orals causing significant liver strain.
Recommendation: Avoid combining. If absolutely necessary, limit to 4 weeks max with liver support.
Monitor: AST, ALT, GGT
Anavar (Oxandrolone) + Anadrol (Oxymetholone)
major — hepatotoxic
Anadrol is highly hepatotoxic. Combination creates extreme liver stress.
Recommendation: Do not combine. Anadrol alone requires liver monitoring.
Monitor: Full liver panel weekly
Superdrol (Methasterone) + Anavar (Oxandrolone)
major — hepatotoxic
Superdrol is extremely hepatotoxic. Any combination increases risk.
Recommendation: Superdrol should never be combined with other orals.
Monitor: Full liver panel every 3 days
Anavar (Oxandrolone) + Winstrol (Stanozolol)
moderate — hepatotoxic
Both can affect lipids and stress liver/kidneys.
Recommendation: If combining, keep cycle short and support organs.
Monitor: Creatinine, BUN, Lipid panel

Monitoring (Bloodwork & Vitals)

Comprehensive metabolic panel (baseline, mid-cycle, post-cycle)
Lipid panel (total cholesterol, HDL, LDL, triglycerides)
CBC (hemoglobin, hematocrit — watch for erythrocytosis)
Sex-hormone panel (Total T, Free T, Estradiol sensitive, SHBG, LH, FSH)
Liver enzymes (ALT, AST, GGT) every 2–4 weeks on oral 17αα cycles
Blood pressure (weekly self-check; flag systolic >140 or diastolic >90)

Baseline bloodwork is recommended before any cycle. Discontinue if liver enzymes exceed 3× upper limit of normal or if hematocrit exceeds 54%.

Frequently Asked Questions

What is the half-life of Anavar (Oxandrolone)?

Anavar (Oxandrolone) has a half-life of approximately 8-9 hours. Clearance estimate: 9h � 5 = 45h = 2 days. This figure is used to determine injection frequency (for esters) and post-cycle clearance timing.

What is the typical dose range for Anavar (Oxandrolone)?

Commonly reported ranges for Anavar (Oxandrolone): 20-50mg/day. Cycle length: 6 weeks max. These are compiled from published studies and community-reported usage — individual response varies and lower end is always preferred.

Does Anavar (Oxandrolone) suppress natural testosterone?

Anavar (Oxandrolone) causes moderate suppression of the HPTA axis (score 5/10). Post-cycle therapy (PCT) is recommended after use.

Is Anavar (Oxandrolone) liver toxic?

Hepatotoxicity rating: Medium. Anavar (Oxandrolone) is 17α-alkylated, which bypasses first-pass liver metabolism and increases hepatic stress. Oral 17αα cycles should be capped at 6 weeks and paired with liver monitoring (ALT/AST every 2–4 weeks).

Does Anavar (Oxandrolone) aromatize to estrogen?

Aromatization profile: No. Minimal to no aromatization expected, so aromatase inhibitors are not typically indicated for this compound alone.

What is Anavar (Oxandrolone) typically used for?

Anavar (Oxandrolone) is commonly used for: Cutting, Performance, Women, Beginner cycles. Intended-use context does not imply safety — every use case carries the same underlying pharmacological risks.

Citations

Disclaimer

StackItSmart is an independent harm-reduction reference. The content above is compiled from peer-reviewed literature and is not medical advice, not an endorsement, and not a recommendation to use Anavar (Oxandrolone). Performance-enhancing compounds carry legal, endocrine, cardiovascular, and hepatic risks. Consult a licensed clinician before any decision. StackItSmart does not provide sourcing, procurement, or dosing prescriptions.