Methylstenbolone M-Sten 5mg 90 Capsules

Every batch of Methylstenbolone M-Sten is independently tested before it is released. Alpha Labs capsules are made in the UK to a fixed strength per capsule, and the batch number is printed on the label under the product name.

The certificate of analysis for each batch is published on this page and on the Lab Testing page. Enter the batch number from your bottle to see the certificate for the exact batch you hold.

Need the report for your records? Email sales@sarmsstore.co.uk with your batch number.

Orders placed before 2pm Monday to Friday are dispatched the same day. Tracked UK delivery is free over £60 (£3.49 below), usually two to three working days, with a next day upgrade for £4.49 at checkout. Packaging is plain with no product names on the outside.

Unopened products can be returned within 30 days of delivery for a full refund, and faulty items within 14 days.

What is the legal position in the UK in 2026? The position for steroidal compounds is different from the position for SARMs and it is worth being precise. Anabolic and androgenic steroids are Class C controlled substances under the Misuse of Drugs Act 1971 in the United Kingdom, and methylstenbolone is a steroidal molecule. It is supplied here strictly as a laboratory research chemical, never for human consumption, and it is not advertised or sold for any human use. Buyers are responsible for ensuring that receiving research materials of this class is permitted where they live, and international destinations are restricted accordingly.

How fast is delivery? We despatch UK orders the same working day by tracked delivery, usually arriving within two to three working days, with a next day upgrade available at checkout, in discreet plain packaging that carries no product or compound name on the outer label. International shipping is offered to most countries, subject to a restricted destination list shown at checkout where local import rules apply.

How should the capsules be stored? Keep the bottle sealed in a cool, dry place below 25C and out of direct sunlight. Stored that way the capsules remain stable for the shelf life printed on the label. Avoid humid environments such as bathrooms and kitchens, because moisture is the main cause of degradation in capsule form.

Is methylstenbolone detectable in sport? Yes. It is prohibited at all times under section S1.1 of the WADA prohibited list and its metabolites are included in anti doping screening methods. Detection windows for 17 alpha methylated steroids are typically measured in weeks.

Why is the strength only 5mg per capsule? Methylstenbolone is described in the chemistry literature as highly potent on a milligram basis relative to its structural relatives, so research grade material is supplied at a low strength per capsule. The figure reflects the compound's potency and nothing else; it is not a recommendation for any use, and this product is not for human consumption.

Research use only. This product is supplied strictly for laboratory and research purposes and is not for human consumption. It is not a medicine, it is not a food supplement, and it is not intended to diagnose, treat, cure or prevent any disease. Sold to persons aged 18 or over only.