What is RAD140 10 (Astera Labs)?
Astera Labs testolone in 10mg tablets, 50 to a sachet. Among the strongest SARMs, and among the most suppressive.
Also sold as testolone, RAD-140 or RAD140.
RAD-140 is one of the strongest SARMs available and it behaves accordingly. It binds the androgen receptor with high affinity in muscle and bone, producing size and strength with far less water than a steroid and considerably less androgenic activity. It is also strongly suppressive, which is the part people underestimate.
RAD140 (Astera) benefits
- Among the strongest SARMs for adding lean size and strength
- Very little water retention, so gains look dry
- Holds size through a calorie deficit, which makes it useful in a recomp
- Far less androgenic than a steroid at comparable results
- Once daily dosing
- 10mg tablets, 50 to a sachet
RAD140 dosage
- Starting dose
- 5 to 10mg per day
- Common range
- 5 to 20mg per day
- Cycle length
- 6 to 8 weeks
- Frequency
- Once daily
- Post-cycle therapy
- Required, plan it before you start
- Bloodwork
- ALT, AST and a fasting lipid panel
Start at the low end and review tolerance before increasing.
Plan post-cycle therapy before you begin. RAD-140 shuts you down properly and deciding what to do about it afterwards is how people spend months feeling flat.
Package content
- Tablets
- 50 per sachet
- Strength
- 10mg RAD-140 per tablet
- RAD-140 per sachet
- 500mg
- Brand
- Astera Labs
At 10mg 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 RAD140 (Astera) for?
People who want size and strength from a SARM and will run a proper post-cycle protocol.
RAD140 10 is the same strength from Deus Medical, and the Biaxol capsules add black pepper extract for absorption.
Before you run it. SARMs suppress your own testosterone and they need post-cycle therapy. The idea that they do not is the most expensive piece of misinformation in this category. They are more selective than steroids, which means fewer androgenic side effects, not an absence of suppression.
Plan post-cycle therapy before you start and
get bloodwork before and after, including lipids and liver markers, both of which SARMs move.
RAD-140 suppresses like a steroid rather than like a supplement, and that is the thing to plan around. Expect to be shut down at 10mg or more. It also raises liver enzymes and pushes cholesterol the wrong way, so check ALT, AST and a fasting lipid panel during and after. Do not pair it with anything else stressing the liver, and keep alcohol low. Aggression and sleep disturbance turn up at higher doses. Not for anyone under 18, and not for women who are pregnant or breastfeeding.
How to use RAD140 (Astera)
Swallow one tablet with water once daily. Do not pair it with anything else that stresses the liver, and keep alcohol low.
Frequently asked questions
Do SARMs really need PCT?
Yes. This is the single most repeated piece of bad advice about them, and it costs people months of feeling flat while they wait for something to recover on its own.
SARMs are selective, not non-suppressive. They act on the androgen receptor and your body responds by shutting down its own production, exactly as it would with a steroid. A SERM such as tamoxifen or clomiphene is what restarts it.
Are SARMs safer than steroids?
Less androgenic, which is a real difference: less hair loss, less acne, less prostate effect at comparable results.
Not safer across the board though. They suppress testosterone, they push cholesterol the wrong way, and the oral ones raise liver markers. Trading one set of risks for a smaller set is not the same as trading it for none.
How suppressive is RAD-140?
Substantially. This is not one of the mild ones. At 10mg and above most people are meaningfully shut down by the end of a run.
Plan post-cycle therapy before you start rather than deciding afterwards, and confirm recovery with bloodwork instead of guessing from how you feel.
What dose should I run?
5 to 20mg a day, and starting at the low end is the sensible approach. Most people settle around 10mg.
Review tolerance before increasing and avoid jumping the dose mid-cycle, which is how people end up attributing a side effect to the wrong thing.
RAD-140 or ostarine?
Ostarine if this is your first SARM or you are cutting and want to hold what you have. It is milder in every sense, including suppression.
RAD-140 if you want size and accept a proper shutdown and a real post-cycle protocol. It does considerably more and asks considerably more.
