MK-677 10mg (Ibutamoren)

The Oral Growth Hormone Booster

MK-677 (Ibutamoren) is a powerful Growth Hormone Secretagogue (GHS). It mimics the hunger hormone ghrelin to signal your pituitary gland to release more Growth Hormone (GH). Unlike HGH injections, it stimulates your body's natural production.

It is famous for dramatically increasing IGF-1 levels, improving sleep quality, and increasing appetite—making it a favorite for bulking cycles and injury recovery.

Key Benefits:

• Increased HGH & IGF-1: Raises levels comparable to low-dose HGH injections.
• Better Sleep: induces deep, restorative REM sleep.
• Appetite Boost: Potent hunger stimulant (great for hard gainers).
• Recovery: Heals joints, tendons, and skin faster.
• Muscle Fullness: Retains nitrogen and water in muscle cells for a constantly "full" look.

Dosage:

• Standard: 10mg - 30mg per day.
• Timing: Take before bed (for sleep) or morning (for appetite).

1. Description — Clinical summary

MK-677 (Ibutamoren) is a non-peptide selective agonist of the ghrelin receptor and a growth hormone secretagogue. It was developed to treat conditions like muscle wasting, obesity, and osteoporosis. It is orally active and effective at sustaining elevated growth hormone and IGF-1 levels for 24 hours with a single dose.

Key features:

• Active compound: Ibutamoren Mesylate.
• Class: Ghrelin mimetic / HGH Secretagogue.
• Mechanism: Mimics Ghrelin.
• Hormonal Impact: Increases GH and IGF-1 without increasing Cortisol.

2. Benefit & Effects

• Anabolism: Increases lean body mass through elevated IGF-1.
• Anti-Catabolic: Prevents muscle wasting even in a caloric deficit (though the hunger makes deficits hard).
• Anti-Aging: Improves skin elasticity, hair, and nail health.
• Sleep: Improves sleep quality and duration.

3. How does it work? (Mechanism of action)

Mechanism of action — pharmacology summary:

• Ghrelin Receptor: MK-677 binds to the ghrelin receptor in the brain.
• Pituitary Stimulation: This signals the pituitary gland to secrete Growth Hormone in a pulsatile manner.
• Liver Conversion: The elevated GH travels to the liver, where it stimulates the production of Insulin-like Growth Factor 1 (IGF-1), the primary mediator of cell growth and repair.

4. Dosage — usage guidelines

Dosage:

• Beginner: 10mg per day.
• Bulking: 20-30mg per day.
• Anti-Aging/Maintenance: 10-12.5mg per day.

Administration:

• Frequency: Once daily (24h half-life).
• Duration: Can be run for long periods (6+ months) as it does not suppress testosterone.

Stacking:

• Bulking: Excellent with RAD-140, LGD-4033, or Testosterone.
• PCT: Can be used during PCT to maintain mass (as it is non-suppressive).

5. Side effects

Common:

• Hunger: Extreme hunger is the most common side effect.
• Water Retention: Can cause mild water weight gain (edema), especially in hands/feet.
• Lethargy: Some users feel tired during the day (taking it at night helps).
• Insulin Sensitivity: Can slightly reduce insulin sensitivity (raise blood sugar).

Rare/Serious:

• Anxiety: Ghrelin is involved in stress response, so anxiety is possible in sensitive individuals.

6. Storage

• Store at room temperature.
• Protect from moisture.