Oxymetholone (Anadrol): Cycle, Dosage, and the 4-Week Limit

Oxymetholone (Anadrol): Cycle, Dosage, and the 4-Week Limit

TL;DR

• Oxymetholone (Anadrol) is a potent oral anabolic steroid originally developed for anaemia; it delivers rapid mass and strength gains but carries a high hepatotoxicity and blood pressure burden.
• The standard dose in performance contexts is 50 mg per day for beginners and up to 100 mg per day for experienced users; returns above 100 mg flatten sharply while side effects keep climbing.
• The cycle limit is 4 weeks — some experienced users stretch to 6, but the liver strain makes longer runs a poor trade.
• Anadrol does not aromatise, yet it causes estrogenic-type side effects (water retention, gynecomastia risk) through a poorly understood non-aromatase mechanism — aromatase inhibitors do not fully fix this.
• It is used almost exclusively as a kickstart at the front of an injectable cycle, never as a standalone compound for beginners.
• Bloodwork before, during, and after is non-negotiable: liver enzymes, lipids, blood pressure, and a full hormone panel.

What Oxymetholone Is

Oxymetholone is a 17-alpha-alkylated oral anabolic steroid, first synthesised in the 1960s and approved clinically for treating anaemia because of its unusually strong stimulation of red blood cell production. That erythropoietic effect is real and measurable: haemoglobin and haematocrit rise noticeably on cycle, which partly explains the dramatic pumps and endurance users report in the first two weeks.

Its anabolic rating is high — roughly three times that of testosterone on paper — and its androgenic rating is comparatively moderate. In practice it produces some of the fastest scale-weight and strength gains of any oral compound, alongside some of the most aggressive side-effect pressure of any commonly used steroid. The two facts are inseparable.

The defining pharmacological feature is the 17-alpha-methyl group, a structural modification that lets the molecule survive first-pass liver metabolism and reach circulation intact when swallowed. The same modification is what makes it hepatotoxic. Every oral in this class shares that trade, but oxymetholone sits toward the harsher end of the spectrum, which is precisely why cycle length is capped in weeks rather than months.

Anadrol is typically supplied as 50 mg tablets. In the shop it appears in the Oxymetholone category alongside other presentations, with common examples being Anadrol 50 50mg/tab 50 Tablets by Omega Meds and the 100-tablet format Anadrol 50 50mg/tab 100 Tablets by Para Pharma. The 50 mg tablet matters practically: it is both a full beginner dose and half of an experienced dose, so dosing arithmetic is trivial — one tablet or two.

Effects: What It Actually Does

Oxymetholone's reputation rests on speed. Within 7–10 days most users see rapid scale weight increases — often 3–6 kg in the first two weeks — driven substantially by intracellular and extracellular water retention plus glycogen loading. Strength climbs quickly, training volume tolerance improves, and the characteristic "full, round" look appears.

Several effects deserve honest framing:

• Genuine tissue gain: behind the water, real muscle protein accretion occurs. But a meaningful fraction of the early scale jump is fluid, and that fluid leaves when the compound stops. Expecting to keep 6 kg from a 4-week run is unrealistic; keeping 2–3 kg of actual tissue from a well-run kickstart is a reasonable outcome.
• Appetite: oxymetholone is famous in both directions — some users get a strong appetite increase, others experience appetite suppression and gastric discomfort at higher doses, which can sabotage the bulking purpose entirely. If food intake collapses at 100 mg, dropping to 50 mg often restores it.
• Red blood cell elevation: this is the clinical mechanism working as designed. It improves work capacity but also raises blood viscosity; combined with the water retention and blood pressure load, it is one of the main cardiovascular stressors of the compound.
• Estrogenic-type effects without aromatisation: oxymetholone does not convert to oestradiol via aromatase, yet water retention and gynecomastia still occur. The mechanism is not fully resolved — progestogenic activity and direct estrogenic receptor interaction have both been proposed. The practical consequence: an aromatase inhibitor blunts the oestradiol side from any testosterone you stack with it, but it does not reliably control oxymetholone's own water retention or gyno risk.

Dosage and the 4-Week Limit

The dosage landscape in performance use is narrower than with most compounds, because the side-effect curve is steep.

Several principles govern these numbers.

The half-life argument for splitting doses. Oxymetholone's half-life is roughly 8–9 hours. A single daily 50 mg dose is acceptable, but at 100 mg/day splitting into morning and evening doses smooths blood levels and, anecdotally, reduces the headaches and blood pressure spikes some users get from a single large dose.

The 100 mg ceiling. Comparative clinical data from the compound's medical history showed that anabolic response plateaus around 100 mg/day while toxicity markers continue to rise. Above that, you are buying side effects, not muscle. Anyone suggesting 150–200 mg daily as routine is describing a liver stress test, not a cycle.

Why 4 weeks is the limit. Elevated liver enzymes on oxymetholone are common even at 50 mg — the question is degree, not whether. ALT and AST typically begin climbing within the first two weeks and accelerate with duration. Four weeks represents the window in which most healthy users see significant gains with enzyme elevations that remain reversible; beyond that, the risk-to-return ratio deteriorates fast. Stretching to 6 weeks is done by experienced users with mid-cycle bloodwork confirming their enzymes are holding; 8 weeks or longer is not a cycle, it is negligence. Cholestatic jaundice and, with prolonged abuse, peliosis hepatis and hepatic tumours are documented consequences of extended 17-alkylated oral use.

Anadrol is a kickstart, not a base. Because suppression is guaranteed and rapid, running oxymetholone alone leaves you shut down with no long-acting compound to carry the cycle. The standard application is weeks 1–4 at the front of a 10–12 week injectable testosterone cycle, providing immediate anabolic pressure while the long ester saturates. Some advanced users place it at the end of a cycle instead ("finisher"), but the kickstart placement is the classic and more rational use.

A Practical Cycle Layout

The most common structure for a first oxymetholone experience, embedded in a testosterone base:

The mid-cycle draw at weeks 3–4 is the critical one for oxymetholone users — it tells you whether your liver is tolerating the compound before you have already committed to the full run. If ALT has tripled by week 3 at 50 mg, the correct response is to stop the oral immediately, not to push through.

Supporting practices that genuinely matter during the oral window:

• Alcohol: zero. Combining a 17-alkylated oral with alcohol is stacking hepatotoxins. Four weeks of abstinence is a trivial price.
• Avoid other oral hepatotoxins: no stacking with other 17-alkylated orals, and be cautious with paracetamol/acetaminophen.
• Liver support supplements (TUDCA, NAC) are widely used and have reasonable mechanistic support, but they are seatbelts, not armour — they reduce damage, they do not make long cycles safe.
• Hydration and sodium awareness: the water retention is significant; crashing sodium or dehydrating yourself to "look dry" on Anadrol adds cramping and blood pressure problems without removing the drug's intrinsic fluid effects.

Side Effects and Risks

Oxymetholone has one of the heaviest side-effect profiles of any commonly used oral. Stated plainly:

• Hepatotoxicity: elevated liver enzymes are expected, not exceptional. Sustained use risks cholestasis; long-term abuse is linked to peliosis hepatis and hepatic neoplasms. This is the primary reason the 4-week limit exists.
• Blood pressure: the combination of water retention and increased red blood cell mass pushes blood pressure up in most users. Headaches — sometimes severe — are a frequently reported early symptom and usually correlate with BP. Home monitoring twice a week is the minimum.
• Gynecomastia: despite not aromatising, oxymetholone carries real gyno risk. Nipple sensitivity or palpable tissue demands immediate action. Note that tamoxifen (a SERM, not an AI) is the relevant emergency tool here, and its own liver load adds to the picture — one more argument for short cycles.
• Lipid damage: HDL suppression on oxymetholone is severe — drops of 50% or more within weeks are documented. Combined with the haematocrit rise and BP elevation, the cardiovascular strain of a 4-week run is substantial even in healthy users.
• Suppression: natural testosterone production shuts down fast. This is guaranteed, which is why the compound belongs inside a cycle with a testosterone base and a planned PCT, not as a solo experiment.
• Androgenic effects: acne and accelerated hair loss in those predisposed to male-pattern baldness occur, though oxymetholone is generally less harsh here than its anabolic punch would suggest.
• Gastrointestinal distress: nausea, appetite loss, and stomach discomfort are common at 100 mg and are a legitimate reason to reduce dose.
• Haematocrit: the erythropoietic effect that makes it useful for anaemia pushes haematocrit upward in healthy users; combined with testosterone, this can reach levels that warrant phlebotomy.

Regarding oestrogen management while on oxymetholone: because the estrogenic symptoms partly bypass aromatase, AI strategy must be driven by bloodwork rather than assumption — the compound's own water retention will not respond to anastrozole the way testosterone-derived oestradiol does. The dosing logic for anastrozole when a testosterone base is involved is covered in detail in the guide on Anastrozole Dosage On Cycle.

Bloodwork and Monitoring

Running oxymetholone without bloodwork is especially indefensible, because its most dangerous effects are silent until they are not. The minimum framework:

• Baseline (week 0): full liver panel (ALT, AST, GGT, bilirubin), lipid panel, total/free testosterone, LH/FSH, oestradiol, haematocrit/haemoglobin, blood pressure. If your baseline liver enzymes or lipids are already off, that is your answer — do not run the compound.
• Mid-cycle (week 3–4): liver panel, lipids, E2, haematocrit, BP trend. This is the decision point: enzymes climbing steeply means the oral ends now.
• Post-cycle and post-PCT: liver enzymes and lipids should trend back toward baseline within 4–8 weeks of stopping the oral; hormone panel confirms axis recovery after PCT.

The reasoning behind each marker, with reference values, is laid out in the article on Blood Tests On A Steroid Cycle 12 KEY Markers Reference Values. Blood pressure deserves emphasis: a cheap home cuff used twice a week catches the most common acute problem on Anadrol before it becomes headaches, nosebleeds, or worse.

FAQ

Is 50 mg of Anadrol per day enough?

For a first run, yes — 50 mg/day produces dramatic early strength and weight gains, and most of the compound's notorious results historically came from 50 mg tablets taken once daily. Doubling to 100 mg adds meaningful mass for experienced users but also amplifies liver strain, blood pressure, and appetite suppression. Start at 50; escalate only with bloodwork supporting it.

Can I run oxymetholone for 6 or 8 weeks instead of 4?

You can find people who have — that does not make it sound practice. Liver enzyme elevation on 17-alkylated orals accelerates with duration, and weeks 5–8 deliver diminishing gains against rising hepatotoxicity. Six weeks with mid-cycle bloodwork showing stable enzymes is the outer edge of defensible; eight weeks is gambling with a compound that keeps its receipts.

Do I need an aromatase inhibitor on an Anadrol cycle?

It depends on your stack, not on the oxymetholone itself. Anadrol does not aromatise, so an AI does nothing for its water retention or gyno risk. If you are running it over a testosterone base, your AI decisions follow the testosterone's oestradiol levels, confirmed by a mid-cycle sensitive E2 assay — never prophylactic fixed dosing from day one.

Why do I get headaches on Anadrol?

The most common cause is elevated blood pressure from rapid water retention and increased blood viscosity, often appearing within the first week. Check your BP before assuming anything else. Persistent severe headaches that do not respond to dose reduction are a legitimate reason to discontinue — they are your cardiovascular system filing a complaint, not a rite of passage.

Is Anadrol a good compound for cutting?

No. The water retention works directly against a cutting goal, and the appetite effects are unpredictable. Its historical and practical role is off-season mass building and strength, where rapid weight gain is the point. For recomposition or cutting phases, other compounds with drier profiles are the rational choice — Anadrol on a deficit mostly buys you side effects.

Can I use oxymetholone without a testosterone base?

Technically possible, practically a bad idea. Oxymetholone suppresses natural testosterone quickly, leaving you hypogonadal mid-cycle with lethargy, low libido, and flat mood, and there is no long-acting compound to preserve gains after the 4-week oral window ends. A testosterone base maintains physiological androgen levels and gives the cycle structure for a proper PCT afterward.

Conclusion

Oxymetholone is the clearest example in the oral steroid class of a compound whose power and price rise together. The honest summary: 50–100 mg per day, four weeks, embedded at the front of a testosterone-based cycle, with bloodwork before, during, and after. Within that frame it delivers rapid, substantial results. Outside that frame — longer durations, higher doses, no monitoring, alcohol in the mix, stacked with other orals — it becomes one of the most damaging compounds in common circulation, and the damage concentrates on the organ you cannot train around.

Who should not use it: anyone with pre-existing liver abnormalities, elevated baseline liver enzymes, dyslipidaemia, uncontrolled hypertension, or haematocrit already near the top of range; anyone under roughly 25 whose endocrine development is still completing; anyone unwilling to abstain from alcohol for the duration; and anyone who will not commit to three blood draws and a home blood pressure cuff. If those conditions exclude you, the correct move is to wait or abstain — Anadrol is not a compound that forgives optimism.

The athletes who use oxymetholone successfully treat the 4-week limit as a law rather than a suggestion, verify their liver's tolerance with mid-cycle labs instead of hoping, and accept that a meaningful share of the early scale weight is water that was never theirs to keep. Respect the ceiling, and it is a potent, predictable tool. Ignore it, and the liver keeps the ledger.