Diet changes or certain prescription medicines can cause nausea, constipation or reflux during weight loss. These pharmacist-approved tips help you manage symptoms safely. For overall plan support, see our weight management overview and balanced plate guide.
GLP-1 side effects and stomach symptoms
Some medicines that affect appetite or fullness slow stomach emptying and can cause queasiness, early fullness or constipation in some people. Rapid shifts in eating patterns can also affect gut motility.
Introduce changes gradually and stay hydrated. If symptoms persist or worsen, ask a pharmacist or prescriber for tailored advice. If progress slows due to symptoms, these plateau tips can help you adjust gently.
Nausea management during weight loss
Eat slowly and choose smaller meals. Avoid very rich or high-fat foods for a few days and try ginger or peppermint if tolerated. Do not lie down straight after eating.
Keep sipping fluids throughout the day. If vomiting occurs repeatedly, seek medical advice promptly.
Constipation remedies and fibre tips
Increase fibre gradually with vegetables, pulses and oats alongside fluids. Prunes, kiwi or psyllium can help some people when introduced slowly.
If needed, discuss pharmacist-advised over-the-counter options and when they are appropriate. Seek help if you have pain, bleeding or no improvement.
Reflux management and meal timing
Have smaller evening meals, avoid eating late and raise the head of the bed. Limit trigger foods if they affect you and consider short-term antacids or alginates if appropriate.
Ask a pharmacist about interactions and spacing antacids from other tablets to avoid absorption issues.
FAQs
Should I skip meals if nauseous?
No. Eat simpler, smaller meals and sip fluids. Seek medical advice if vomiting persists.
Is fibre supplementation safe?
Often yes when introduced gradually with fluids, but confirm with your pharmacist to avoid interactions.
Can antacids affect my other tablets?
They can change absorption timing. Ask your pharmacist how to space doses.
Need personalised advice
Side-effect or medicine questions? Ask a Pharmacist. We dispense Wegovy, Mounjaro and Saxenda on valid prescription.
