Month 1: Adaptation & Appetite Reset (Weeks 1–4)
1. Appetite Changes Begin Quickly
Most people notice:
- Reduced hunger within the first 3–7 days
- Earlier satiety (feeling full faster)
- Less “food noise” or compulsive thinking about meals
However, appetite suppression may feel inconsistent early on. This is normal as the body adjusts to hormonal signaling shifts.
2. Gastrointestinal Adjustments
Common early effects:
- Mild nausea
- Slower gastric emptying
- Early fullness
- Occasional bloating
- Constipation (common)
These symptoms are usually dose-dependent and improve as the body adapts.
Severe nausea is less common when titration is gradual.
3. Energy & Metabolic Shifts
Because retatrutide activates the glucagon receptor:
- Some people feel slightly warmer
- Resting heart rate may increase modestly
- Energy expenditure rises
Interestingly, some individuals feel:
- Slight fatigue in week 1–2
- Increased energy by week 3–4
This reflects metabolic recalibration.
4. Weight Changes
Month 1 typically shows:
- Rapid water weight reduction
- Appetite-driven calorie reduction
- 4–10+ lbs lost (varies widely)
Faster early weight loss often includes some lean mass unless protein intake and resistance training are prioritized.
5. Cravings & Food Preferences Shift
Many report:
- Reduced desire for high-fat foods
- Reduced alcohol cravings
- Smaller portion sizes naturally
Sugar cravings may drop significantly