A black bottle labeled M-STEN contains 6.6mg per capsule, 90 capsules (600mg total), and is highest purity, highest dose per bottle, 3rd party tested. For research use only.
M-STEN
£69.99 Original price was: £69.99.£54.99Current price is: £54.99. Add to basket
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M-STEN

Original price was: £69.99.Current price is: £54.99.

5MG LGD-4033/ 10MG MK-677 PER CAPSULE – 90 CAPSULES (450MG/900MG) PER BOTTLE

M-Sten (Methylstenbolone) prohormone – 10mg high-dose capsules by Olympus Labs UK. Potent research compound for extreme muscle mass and strength gains. Lab-tested, pure.

Purchase this product now and earn 55 Points!

FREE SHIPPING on all orders within the UK above £50 and £200 internationally

A circular badge with a red flask outline and Tested for Concentration in red on a silver and black background, perfect for MK-2866 (OSTARINE) products.

CONCENTRATION TESTED

Each finished product is tested for ingredient concentration ensuring label claims are met

A circular icon with two blue water droplets and a plus sign on a black background, bordered by a metallic silver ring, represents MK-2866 (OSTARINE).

HIGHEST DOSE SEAL

All our products provide the highest dosing and total ingredient concentration compared to market standards.
A circular badge with a droplet outline in the center and Tested for Identity and Purity in green lettering on a silver and black background—perfect for MK-2866 (OSTARINE) products.

IDENTITY & PURITY TESTED

Each product is tested for ingredient purity and identification
A circular badge with a silver and black background shows the words 3rd PARTY TESTED in blue capitals, indicating independent verification of MK-2866 (OSTARINE).

3RD PARTY TESTED

3rd party tested: Each product is 3rd party certified by Janoshik
A close-up of a black container with a partially opened lid reveals a silver seal labeled Olympus Labs in white text, covering the mouth of the MK-2866 (OSTARINE) jar.

TAMPER PROOF SEALED

All Olympus Labs UK products come with tamper proof seals
A black circular label with a silver border features the white text BATCH CODE: OL2201, centered in a rectangle—perfect for identifying MK-2866 (OSTARINE) products.

BATCH TRACKING

Each production run comes with its own batch tracking and full access to test results certifying quality, purity, and concentration

"Not exaggerating when I say the best customer service and shipping times I have ever had. Research went great. My go to source for all research."

– JOEINNE A.,
OLYMPUS LABS UK CUSTOMER
5.0
5/5
A black M-STEN bottle with blue and white text sits in a blue hexagonal border. The label shows 600mg Methylstenbolone per bottle, 90 capsules, and features a rugged blue stone design.

PURCHASED TOGETHER

MK-677

GHRELIN RECEPTOR
AGONIST

£ 42.99

LGD-4033

SELECTIVE ANDROGEN RECEPTOR MODULATOR

£ 59.99

M-STEN

PRO
HORMONE

£ 42.99

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WHAT OUR CLIENTS HAVE TO SAY

Additional information

Weight 0.3125 lbs

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