Weight Loss

What to expect in your first month on a GLP-1

A week-by-week guide to the appetite changes, side-effect patterns, and habits that set you up for steady, sustainable progress.

RC
Rejuviya Clinical Team
Reviewed by board-certified physicians
May 14, 20267 min read
What to expect in your first month on a GLP-1
Week 1
Food noise fades
Week 4–6
First visible weight loss
1–2 lb
Typical weekly loss after week 4
Key takeaways
  • Week 1 is about tolerance, not weight loss.
  • Nausea peaks in the 48 hours after each injection and fades quickly.
  • Protein, hydration, and strength training compound results.
  • Dose increases happen monthly — only if side effects are mild.

Week 1: Quiet but noticeable

The starter dose isn't a weight-loss dose — it's a tolerance dose. Most members notice 'food noise' fading: fewer intrusive thoughts about snacks, smaller portions feeling satisfying. Don't expect scale movement yet. Do expect a quieter relationship with food.

Week 2–3: Habits start to stick

Mild nausea is most common in the first 48 hours after each injection and usually fades. Smaller meals, more water, and avoiding ultra-fatty or fried foods make a big difference. This is when protein-first eating starts to feel automatic.

Week 4: First dose increase

If side effects have been mild, your clinician usually steps up the dose. This is when the scale starts moving consistently for most members — typically 1–2 lb per week from here. If side effects spike, you stay at the current dose another month. Patience compounds.

Habits that compound

  • 30g of protein at every meal protects muscle
  • Two or three short strength sessions weekly protects metabolism
  • Half your body weight in ounces of water minimizes nausea
  • Sleep protects everything else

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