What is Methenolone Enanthate 100 (Astera Labs)?
Astera Labs methenolone enanthate at 100mg/ml, in a 10ml vial. Primobolan, the mildest injectable most people will run.
Also sold as Primobolan, Primobolan Depot or metenolone enanthate.
Methenolone is a DHT derivative that cannot aromatise, and it is genuinely mild. That mildness is the whole proposition: very few side effects, no water, no estrogen, and a slow steady effect that holds lean tissue through a deficit. It is also weak, which is why the doses are high.
Methenolone Enanthate 100 benefits
- One of the mildest injectables available, with very few side effects reported
- Cannot aromatise, so no water retention and no estrogen from it
- Holds lean tissue through a calorie deficit, which is its main use
- Mild enough that it is one of the few compounds women run at all
- One vial rather than ten ampoules, which matters on a compound that needs high doses
Methenolone Enanthate 100 dosage
- Standard
- 400 to 600mg per week, which is 4 to 6ml
- Higher end
- 600 to 800mg per week
- Women
- 50 to 100mg per week
- Run alongside
- Testosterone as the base
- Frequency
- Twice weekly
- Half-life
- About 10 days
- Cycle length
- 12 to 16 weeks
At 100mg/ml a 400mg week is 4ml, split as 2ml twice. That is a lot of oil, which is the argument for the 200mg/ml version at these doses.
Under-dosing is the usual mistake. Methenolone is genuinely weak, and 200mg a week will do very little.
Package content
- Vial
- 10ml sterile multidose
- Strength
- 100mg/ml
- Methenolone per vial
- 1000mg
- Carrier
- Miglyol 812
- Brand
- Astera Labs
At 400mg a week one vial covers two and a half weeks.
Store below 30°C. Protect from light. Do not freeze. Keep out of reach of children.
Who is Methenolone Enanthate 100 for?
People who want lean tissue held through a cut with as few side effects as possible. Also one of the very few injectables women run, and at 50 to 100mg a week this concentration suits those doses better than the 200 does.
For men running 400mg or more, the 200mg/ml version halves the volume. PRIMOMED 100 is the ampoule format at the same strength.
Before you run it. The honest caveat is that methenolone is weak. It needs high doses to do much, which makes it one of the most expensive ways to add lean tissue, and people expecting a strong compound are routinely disappointed. What you are buying is the absence of side effects rather than the presence of dramatic results. It does not aromatise, so the
estrogen management guide applies to what you run alongside it. It still suppresses your own production, so
post-cycle therapy is required, and
bloodwork is how you track it. Not for anyone under 18, and not for women who are pregnant or breastfeeding.
How to use Methenolone Enanthate 100
Intramuscular injection, twice weekly. Wipe the stopper before every draw and rotate sites. The injection technique guide covers the technique.
Frequently asked questions
Is Primobolan actually worth it?
It depends entirely on what you want from it. If you want strong results, no. Methenolone is weak and expensive, and almost anything else will do more per milligram.
If you want lean tissue held through a cut with minimal side effects and no water at all, it does that as well as anything and more comfortably than most. You are paying for what it does not do.
What dose does it need?
More than people expect. 400mg a week is the realistic starting point and 600 to 800mg is common, where a stronger compound would be doing plenty at 300.
Running 200mg a week and concluding methenolone does nothing is a common and avoidable mistake.
Can women use it?
It is one of the few injectables women run, precisely because it is mild and does not aromatise. Doses are far lower, typically 50 to 100mg per week.
Mild is not the same as safe. Virilisation is still possible, and voice changes and hair growth do not always reverse. Stop at the first sign rather than pushing through.
Should I get the 100 or the 200?
Match it to your dose. At 400mg a week or more the 200mg/ml halves the volume you inject, which is a real difference when you are already putting in four millilitres.
At lower doses, and particularly for women running 50 to 100mg a week, the 100mg/ml is easier to measure accurately.
Does it aromatise?
No. Methenolone is a DHT derivative and cannot convert to estrogen, so there is no water retention and no gyno risk from it.
The testosterone you run alongside it still aromatises.
