What is Oxandrolone 20 (Astera Labs)?
Astera Labs oxandrolone in 20mg tablets, 100 to a sachet. Anavar at the strength for men running a full dose, not for the low doses women use.
Also sold as Anavar, Oxandrin, Lonavar or Vasorome.
Oxandrolone is a mild oral that does not aromatise, so water retention and estrogen management are not part of the picture. It also lowers SHBG, which raises the free portion of whatever testosterone is already in your system, so it tends to make the rest of a cycle work harder rather than simply adding to it.
Oxandrolone 20 benefits
- Strength gains without the bodyweight, which is why weight-class athletes use it
- Holds onto muscle through a cut, when calories are low and training volume is high
- No aromatisation, so no water retention and no estrogen to manage
- Lowers SHBG, freeing up more of the testosterone already in your system
- 20mg tablets suit men running 40 to 60mg without splitting anything
Oxandrolone 20 dosage
- Men
- 40 to 60mg per day, which is 2 to 3 tablets
- Men, strength focus
- Up to 80mg per day
- Women
- Not this strength, see below
- Frequency
- Split into 2 doses across the day
- Half-life
- About 9 hours
- Cycle length
- Around 8 weeks, not longer as routine
Split the daily total into two doses, morning and early evening. Oxandrolone clears quickly and spreading it keeps levels steadier through the day.
This strength is wrong for women. Female dosing is 5 to 10mg a day, which would mean quartering a 20mg tablet. ANAVAMED 10 is the appropriate product there, and even that gets halved.
Package content
- Tablets
- 100 per sachet
- Strength
- 20mg oxandrolone per tablet
- Oxandrolone per sachet
- 2000mg
- Half-life
- About 9 hours
- Brand
- Astera Labs
At 40mg a day one sachet covers 50 days.
Store below 30°C. Protect from light. Do not freeze. Keep out of reach of children.
Who is Oxandrolone 20 for?
Men running oxandrolone at a full dose, where 20mg tablets mean two or three a day and nothing gets split. Weight-class athletes, people cutting who want to keep what they built, and anyone wanting more out of the testosterone already in their cycle.
ANAVAMED 10 is the same compound at 10mg in a 50-tablet box, which is the right product for women and for anyone wanting finer steps.
Before you run it. Oxandrolone has a reputation for being gentle and that reputation is only half earned. It is 17-alpha-alkylated, so it does pass through the liver and does put a load on it, though less than most orals here.
The bigger risk is cholesterol, which it pushes the wrong way harder than its mild reputation suggests, HDL down and LDL up.
It also suppresses your own testosterone even at modest doses, so post-cycle therapy applies despite what you will read. The
post-cycle therapy guide covers it and
bloodwork before and after is how you track both. Not for anyone under 18, and not for women who are pregnant or breastfeeding.
How to use Oxandrolone 20
Swallow with water, with or without food depending on how your stomach handles it. Split the daily total into two doses, morning and early evening. Keep alcohol low for the duration.
Frequently asked questions
Does Anavar really need PCT?
Yes. This is the most repeated piece of bad advice about oxandrolone. It is milder than most compounds, but mild is not the same as non-suppressive.
Studies and bloodwork both show meaningful suppression of natural testosterone at ordinary doses. Coming off without post-cycle therapy leaves you low for longer than the cycle lasted.
Is 20mg the right strength for women?
No. Women run 5 to 10mg a day, so a 20mg tablet would need quartering, which is not something you can do accurately.
The 10mg version is the appropriate product, and most women halve even those. Buying the 20mg because it looks like better value is a false economy if you cannot dose it.
Why is it so expensive compared to other orals?
Oxandrolone is genuinely costly to manufacture, and the doses men run are high relative to other orals. 40 to 60mg a day of anything adds up faster than 10mg a day does.
That is worth knowing before you commit. If budget is the deciding factor, almost any other oral here gives more per unit spent. What you are paying for with oxandrolone is what it does not do.
Will it make me bigger?
Not really, and that is the point of it. Oxandrolone adds strength and hardness without adding much bodyweight, which is exactly why weight-class athletes use it.
If size is the goal, this is the wrong compound and you will be disappointed by it.
Does it aromatise?
No. Oxandrolone cannot convert to estrogen, so there is no water retention and no gyno risk from it.
The testosterone you run alongside it still aromatises, so estrogen management is about that rather than this.
