Nausea is the most common GLP-1 side effect, especially during the first month and after every dose increase.
Practical tips
- Smaller, more frequent meals. Half your usual portion, twice as often.
- Protein first. Front-load protein to maintain lean mass and reduce nausea spikes.
- Avoid greasy or very sweet foods. Both worsen GI symptoms.
- Hydrate. 2–3 L water/day; avoid carbonation if it worsens reflux.
- Time injections. Many patients prefer injecting before bed so peak nausea hits during sleep.
OTC options to discuss with your prescriber
- Ginger (tea, candies)
- Vitamin B6 (commonly used for pregnancy nausea)
- Antacids for reflux
If nausea is severe enough to prevent eating or hydration for >24 hours, call your prescriber.
Related resources
More in Side effects
What are the most common GLP-1 side effects?
Most side effects are gastrointestinal: nausea, constipation, diarrhea, and reflux. Typically peaks during dose escalation and improves with time.
Are GLP-1 medications safe?
GLP-1 drugs have been studied and used for over 15 years. Common side effects are GI. Rare risks include pancreatitis, gallbladder issues, and a boxed warning for thyroid C-cell tumors based on rat studies.