Description
Our Ostarine and MK-677 stack puts Ostarine 25mg/mL and MK-677 25mg/mL together as two bottles, so a study that needs all of them can be ordered at once. It’s sold for laboratory research only.
What’s in the Ostarine and MK-677 stack
MK-2866 is ostarine, also called enobosarm or GTx-024, a nonsteroidal SARM first developed by GTx Inc. It binds the androgen receptor, but its structure isn’t based on testosterone, and in lab models it acts mainly on muscle and bone with much less activity in tissues like the prostate.
MK-677 (ibutamoren) is an orally active, nonpeptide growth hormone secretagogue developed by Merck. It mimics ghrelin at the GHS-R1a receptor, raising growth hormone and IGF-1. It’s often sold next to SARMs, but it isn’t one.
Why researchers order the Ostarine and MK-677 stack
The compounds in this stack don’t overlap: Ostarine is the most studied SARM, with human trial data on muscle wasting and MK-677 is an oral ghrelin mimic that raises GH and IGF-1 and isn’t a SARM. Labs that want to look at more than one pathway in the same model often order them together, and buying them as a set keeps the batches matched.
Nothing is blended. Each compound stays in its own container, which keeps measurement simple and lets you run controls with one compound only.
How the Ostarine and MK-677 stack works
Ostarine binds the androgen receptor in the cell’s cytoplasm. The receptor then moves into the nucleus and switches on androgen-responsive genes, the same basic route testosterone uses.
MK-677 binds GHS-R1a, the same receptor as ghrelin and the GHRP peptides, in the pituitary and hypothalamus. That boosts the size of natural GH pulses and lifts IGF-1 from the liver.
Ostarine and MK-677 stack product details
- Ostarine (MK-2866), 25mg/mL in a 30mL bottle, 98.04% by HPLC (CAS 841205-47-8, C19H14F3N3O3, 389.3 g/mol)
- MK-677 (ibutamoren), 25mg/mL in a 30mL bottle, 99.87% by HPLC (CAS 159634-47-6, C27H36N4O5S, 528.7 g/mol)
- Form: liquid in USP-grade PEG-400, graduated 1mL glass pipette with each bottle
- Tested by: MZ Biolabs, Tucson, Arizona
- SKU: STL-OST-MK
- Intended use: laboratory research only
Research behind the Ostarine and MK-677 stack
The best-known study is a phase 2 trial by Dobs and colleagues, published in The Lancet Oncology in 2013. It tested enobosarm in 159 patients with cancer-related muscle wasting and reported more lean body mass than placebo.
Nass and colleagues ran a two-year trial in healthy older adults, published in the Annals of Internal Medicine in 2008. MK-677 raised GH and IGF-1 to levels seen in young adults and increased fat-free mass, with rises in fasting glucose noted.
All of these studies are indexed on PubMed. This combined search pulls them up.
How Sports Technology Labs tests Ostarine and MK-677 stack
Every batch is sent to MZ Biolabs in Tucson, Arizona, before it goes on sale. They run HPLC for purity and mass spectrometry to confirm identity. The latest certificates for this product read Ostarine at 98.04% and MK-677 at 99.87%.
You’ll find the COA in the photo gallery above. Open it and check the date, the method and the purity figure yourself.
Both numbers matter. Purity by HPLC means little if nobody checked the identity, and that’s the job mass spectrometry does.
Orders are covered by a 60-day money-back guarantee.
Measuring and storing the Ostarine and MK-677 stack
Every bottle is 30mL with a graduated 1mL glass pipette. Since the strengths differ, label which pipette belongs to which bottle:
- Ostarine at 25mg/mL: 1mL holds 25mg, 750mg per bottle
- MK-677 at 25mg/mL: 1mL holds 25mg, 750mg per bottle
PEG-400 is thicker than water, so draw slowly and let the pipette drain. Store the bottles capped in a cool, dry place out of direct light.
Related to Ostarine and MK-677 stack
- MK-677 Cardarine SR-9009 Triple Stack, three bottles in one order
- LGD-4033 and YK-11 Stack, two bottles in one order
- RAD-140 and LGD-4033 Stack, two bottles in one order
- RAD-140 MK-677 Ostarine Triple Stack, three bottles in one order
- Ostarine and Cardarine Stack, two bottles in one order
Want the whole catalog? Open our SARM stacks and SARMs for sale, or start from the Sports Technology Labs home page.
Common questions about Ostarine and MK-677 stack
What’s in the Ostarine and MK-677 stack?
Ostarine 25mg/mL and MK-677 25mg/mL, as two separate bottles.
Can I buy the Ostarine and MK-677 stack compounds separately?
How should the Ostarine and MK-677 stack be stored?
Capped, in a cool, dry place out of direct light.
Can the Ostarine and MK-677 stack be used in people or animals?
No. Sports Technology Labs sells it for laboratory research only. It isn’t approved for human or veterinary use.
Is this stack in stock?
Yes, it’s in stock now, and shipping is free.
Get this stack from Sports Technology Labs
Ready to order? This stack costs $125.99, it’s in stock and shipping is free. Paying in crypto takes 15% off.
Compounds that fit the same study sit in our SARM stacks and SARMs for sale.
Sports Technology Labs sells this product for laboratory and in-vitro research only. It isn’t a medicine, food or dietary supplement, and it must not be given to people or animals. The FDA has not evaluated any statement on this page. Ostarine and MK-677 are on the World Anti-Doping Agency prohibited list (S1.2, anabolic agents and S2, peptide hormones, growth factors and mimetics), so tested athletes should not handle them outside a lab. Buyers must be 21 or older.
Reviews
There are no reviews yet.