🔬 What is Retatrutide?
Retatrutide is a triple-agonist:
GLP-1 → appetite suppression, better insulin sensitivity
GIP → improved fat loss + metabolic efficiency
Glucagon receptor (GCGR) → increases energy expenditure & fat burning
👉 Compared to Semaglutide or Tirzepatide, retatrutide tends to:
Reduce more fat
Cause less muscle loss
Increase metabolic rate, not just appetite suppression
🎯 What it’s used for
Fat loss (including stubborn belly fat)
Improved insulin sensitivity
Appetite control
Recomposition (fat loss + muscle retention)
💉 Administration
Route: Subcutaneous (belly, thigh, or glute)
Frequency: Once weekly
Same day each week
Can be taken with or without food
📈 Recommended Beginner → Advanced Protocol
(VERY important to titrate slowly to avoid nausea)
Weeks 1–2
0.5 mg once weekly
Weeks 3–4
1.0 mg once weekly
Weeks 5–6
2.0 mg once weekly
Weeks 7–10
3.0–4.0 mg once weekly
👉 This is where fat loss really accelerates
Advanced / Max (optional)
5–6 mg weekly
⚠️ Only if well tolerated and experienced with GLP-1s
Most people get excellent results at 2–4 mg/week.
More is NOT always better.
🧪 Typical 32 mg Pen Usage
Example at 4 mg/week:
32 mg ÷ 4 mg = 8 weeks per pen
At 2 mg/week:
16 weeks per pen
⚠️ Common Side Effects (usually temporary)
Nausea (most common)
Full feeling / reduced appetite
Acid reflux
Mild fatigue
Constipation or loose stools
💡 Tips to reduce sides:
Eat smaller meals
Avoid very fatty meals
Stay hydrated
Add electrolytes
Consider ginger or peppermint tea
❌ Who should NOT use it
History of medullary thyroid cancer
Severe GI disease
Pregnant or breastfeeding
Uncontrolled gallbladder issues
🧠 Muscle Preservation Tips (important)
Because appetite drops hard:
Protein: minimum 2–2.2 g/kg bodyweight
Resistance training 3–5x/week
Don’t crash calories too aggressively
🔁 Cycling / Duration
Can be run 12–20 weeks
Some users stay on a low maintenance dose (1 mg/week) afterward
No traditional PCT required
🔥 Stack Compatibility (if relevant)
Often stacked with:
L-Carnitine
Yohimbine (fasted cardio)
Mild androgens / SARMs (advanced users)
HGH / peptides
