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About Us

Performance Clinics are World's premium quality sports research product suppliers. Our products are the highest quality / purity on the market, produced in the most sophisticated and highly regulated US facilities available and tested by World's most trusted quality assurance analysts with quality reports available on request.

We provide research only products to our clients and ensure access to the best quality product at a fraction of the price available to research specialists elsewhere. Please read our product usage disclaimer before deciding whether or not our products are suitable for your research project.

Enhanced Bulk Stack (1 month)


in stock



Enhanced Bulk Muscle Stack Products:

LGD-4033 (Gain), MK-677 (Growth) and RAD140 (Premium Anabolic)

Cycle: 8 – 12 weeks

Stack duration: This stack will last up to 30 days or 4 weeks.

Dosage: LGD-4033, 10mg per day in the morning. RAD140, 20mg per day dosed in the morning.

MK-677, 10 – 25mg per day, dosed in the morning.

Post cycle: 4 weeks PCT Clomiphene at 25mg per day for 4 weeks)

Stack Summary:

The enhanced muscle stack is basically the bulking stack with the introduction of MK-677.

What the introduction of MK-677 will do will be to increase the lean gains, overall feeling of well-being and infuse an element of growth hormone secretion which will not only give the stack an extra kick but will also act to prevent any spike in body fat during the cycle.

What this means is that users on an enhanced muscle stack cycle will see the full benefit of enhanced bulk, lean gains and the overall look that most bodybuilders aspire to!

When coming off the bulking cycle users will see a rapid reduction in fat as they enter the PCT and cutting cycle whilst maintaining gains made on the original cycle. This is without question an exceptional stack that many subjects love.

Note: All PC International products are for research purposes only. No statements made on this website or blog have been evaluated by your local or international administrative or regulatory body as our products are strictly for research purposes only. All products for sale are intended for laboratory and research use. All buyers must be a minimum of 18 years to purchase these products. These products are not intended to treat, cure or prevent any disease or illness. Please refer to our product use and disclaimer for more information.

About Us

Performance Clinics are World’s premium quality sports research product suppliers.

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