Yk11 / Mk 677 10mg / 25mg x 30ml


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What are YK11 and MK 677, and How Do They Work?

YK11 and MK-677 are two popular peptides used by bodybuilders and athletes. YK11 is a myostatin-inhibiting SARM, while MK 677 is a growth hormone secretagogue.

Myostatin is a protein that inhibits muscle growth and limits muscle cell proliferation. YK11 binds to the myostatin receptor, blocking the effects of myostatin. This allows for increased follistatin expression, which further promotes muscle growth. Essentially, YK11 enables the body to build significantly more muscle mass.

Meanwhile, MK 677 mimics the hormone ghrelin. It binds to ghrelin receptors in the brain, stimulating the pituitary gland. This causes a surge in growth hormone and IGF-1 production, creating an anabolic environment ideal for building muscle. MK 677 users experience enhanced protein synthesis, nitrogen retention, and muscle growth.

Both compounds taken together provide powerful muscle-building synergy. YK11 enables the body to support more muscle growth, while MK 677 provides the raw materials and anabolic signals to fully capitalize on this capability. Users report rapid gains in lean muscle, improved strength, better recovery, and increased bone density.

Benefits of YK11 and MK 677 Cycles

  • Significant muscle mass gains
  • Increased strength: ability to lift heavier weights
  • Enhanced endurance and stamina
  • Accelerated recovery between workouts
  • Improved collagen synthesis for joint and bone support
  • Body recomposition: lose fat while gaining muscle
  • Anti-aging effects: skin, hair, and vitality improvements

Recommended Dosage and Cycles

For YK11, 5–10 mg per day is recommended. MK 677 dosage ranges from 10–25 mg per day. Cycles typically last 8–12 weeks, followed by an equal amount of time off. This allows the body to normalize hormone levels. Taking test-based or post-cycle therapy is advised to maintain gains.

YK11 and MK 677 both have excellent safety profiles with minimal side effects. However, users may experience increased hunger, water retention, or numbness or tingling in the hands or feet. Long-term MK-677 use can potentially suppress natural HGH production.

Where to Buy YK11 and MK 677 Online

As research chemicals, YK11 and MK 677 are not approved for human consumption. However, many leading peptide companies offer both peptides for sale online for research purposes only. Purchasing from a verified source with third-party purity testing is strongly recommended. A prescription is also advised before buying any peptides.

Weight 0.01 lbs