What is GW501516 10 (Astera Labs)?
Astera Labs cardarine in 10mg tablets, 50 to a sachet. Endurance through a metabolic pathway, with no suppression and no post-cycle protocol.
Also sold as cardarine, GW-501516 or Endurobol.
Cardarine works differently again. It is a PPAR-delta agonist, acting on a metabolic switch rather than an androgen receptor: it signals muscle to burn fat for fuel instead of glycogen, which is why the effect shows up as endurance rather than size. Nothing it does involves hormones, so nothing is suppressed.
GW501516 (Astera) benefits
- A large and quickly noticeable increase in endurance
- Shifts fuel use toward fat, so it supports a cut without stimulants
- Does not act on hormones at all, so nothing is suppressed
- No post-cycle therapy needed
- Improves lipid profile in most reports rather than worsening it
- 10mg tablets, 50 to a sachet
GW501516 dosage
- Standard
- 10 to 20mg per day
- Common
- 10mg, one tablet
- Timing
- 1 to 2 hours before training
- Frequency
- Once daily
- Half-life
- About 24 hours
- Run length
- 8 weeks, then a real break
10mg daily is the common dose and 20mg the upper end, taken an hour or two before training.
Run it in blocks rather than continuously, for the reason set out below.
Package content
- Tablets
- 50 per sachet
- Strength
- 10mg cardarine per tablet
- Cardarine per sachet
- 500mg
- Half-life
- About 24 hours
- 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 GW501516 (Astera) for?
Endurance athletes and anyone cutting who wants the fuel-use shift without a stimulant load.
GW501516 10 is the same strength from Deus Medical, and the Biaxol capsules add black pepper extract for absorption.
Before you run it. Cardarine does not touch your hormones, so there is no suppression and no post-cycle therapy, which is the main reason people like it.
Run it in defined blocks rather than continuously. Eight weeks on with a real break afterwards is the established pattern and it is worth sticking to rather than treating this as something to stay on year round.
Bloodwork is worth having as with anything else. Not for anyone under 18, and not for women who are pregnant or breastfeeding.
How to use GW501516 (Astera)
Swallow one tablet with water, an hour or two before training. Run it in eight week blocks with real breaks rather than continuously.
Frequently asked questions
How is cardarine different from the other compounds here?
It acts on a metabolic pathway rather than an androgen receptor, so it works on how your muscles use fuel instead of on muscle growth directly.
The practical consequences are that it does not suppress testosterone, needs no post-cycle therapy, and gives you endurance rather than size.
Does it need PCT?
No. Cardarine does not act on hormones at all, so there is nothing suppressed and nothing for a SERM to restart.
It is one of only two things in this category where that is true, the other being MK-677.
Why is it run in blocks rather than continuously?
Eight weeks on with a proper break afterwards is the established pattern for cardarine, and it is worth following rather than treating it as something to stay on indefinitely.
There is no tolerance issue driving that; the endurance effect holds throughout a run. It is simply how the compound is sensibly used.
Will it build muscle?
No, and expecting it to is the usual disappointment. Cardarine works on how your muscles use fuel, not on the androgen receptor that drives growth.
What you get is endurance, and often a noticeable improvement in how a cut feels. Size is not on the menu.
How quickly does it work?
Faster than almost anything here. Most people notice the endurance effect inside the first week or two, which is unusual and part of why it is popular.
If two weeks have passed and your conditioning is unchanged, something is wrong with the product rather than the timeline.
