What is Power (Astera Labs)?

Carnitine and magnesium in equal measure, with ATP and choline alongside. It is aimed at energy production rather than at fat loss or pumps.

L-carnitine moves fatty acids into the mitochondria where energy is produced. Magnesium aspartate is involved in hundreds of enzyme reactions including the ones that produce and use ATP, and it is one of the minerals hard training and heavy sweating deplete most reliably. ATP and choline support the same pathway from different directions.

Power benefits

Magnesium at 100mg per ml, which is a mineral most people training hard are genuinely short of
Carnitine for the energy transport step rather than for fat loss specifically
Supports recovery between sessions as much as performance during them
No stimulant, so it can be used any time of day
Not hormonal, so nothing is suppressed and no post-cycle therapy applies

Power dosage

Standard: 1ml, 2 to 3 times per week
L-carnitine: 100mg per ml
Magnesium aspartate: 100mg per ml
Choline: 10mg per ml
ATP: 10mg per ml
Total actives: 220mg per ml

1ml two to three times a week. No stimulant, so timing is flexible; many people use it post-training for the recovery side.

Magnesium is the ingredient here most likely to make a noticeable difference, simply because heavy training and sweating deplete it and a lot of people are running low without knowing.

Package content

Vial: 10ml multidose
Total actives: 220mg per ml
L-carnitine: 100mg per ml
Magnesium aspartate: 100mg per ml
Choline: 10mg per ml
ATP: 10mg per ml
Brand: Astera Labs

At 1ml three times a week one vial covers just over three weeks.

Store below 30°C. Protect from light. Do not freeze. Keep out of reach of children.

Who is Power for?

People training hard who want recovery and energy support rather than a pump or a fat burner. It is the least specialised product on this shelf and the most broadly useful.

If fat loss is the goal, Burn has double the carnitine. If you want a pump, Pump is built for it.

Before you use it. Straightforward and well tolerated. Injection site soreness is the usual complaint and intramuscular is more comfortable than subcutaneous. Magnesium can loosen the stools at high doses, though that is far more of an issue orally than by injection. Nothing in it is hormonal, so nothing is suppressed and no post-cycle therapy applies. Store cool, dry and out of direct sunlight. Not for anyone under 18, and not for women who are pregnant or breastfeeding.

How to use Power

Draw 1ml and inject subcutaneously or intramuscularly. Intramuscular is preferred, since these solutions can irritate under the skin. Rotate sites and wipe the stopper before every draw. The injection technique guide covers it