Ramadan 2026 started on the evening of 17th February. If you’re on a weight loss injection like Mounjaro, Wegovy, Ozempic, or Saxenda, you’ve probably been wondering how fasting fits around your treatment.
The short answer: subcutaneous injections don’t break your fast. Inject during non-fasting hours. Stay hydrated between Iftar and Suhoor. That’s the core of it. Here’s the details.
Do Weight Loss Injections Break Your Fast?
No. The International Islamic Fiqh Academy ruled in 1997 that subcutaneous, intramuscular, and intravenous injections do not invalidate the fast, provided they aren’t nutritional (meaning IV drips that replace food). Weight loss injections contain no calories and don’t replace food or drink. They’re medicine.
Shaykh Ibn Baz and Shaykh Ibn Uthaymeen support this position. The Hanafi school agrees: anything entering through the skin, veins, or muscles doesn’t break the fast because it never reaches the stomach through a direct passage.
That said, many scholars recommend scheduling medicinal injections during non-fasting hours as a precaution. Since all these medications can be taken at any time of day, dosing after Iftar or before Suhoor avoids the question entirely.
If you want personal certainty, speak to your Imam alongside your pharmacist. These decisions sit between medicine and faith.
Mounjaro During Ramadan
Mounjaro (tirzepatide) is once-weekly, so timing is simple. Keep your injection day the same throughout the month. Consistency matters more than the exact hour.
Don’t increase your dose during Ramadan. Stronger side effects plus 12+ hours of fasting with no water is a rough combination. Save the increase for after Eid.
Inject after Iftar. Side effects tend to peak in the first 24 to 48 hours, and you want that window to fall when you can eat and drink. Before Suhoor also works. Pick one and stick with it.
Eat slowly when you break your fast. Mounjaro slows gastric emptying, so a large meal eaten quickly after a full day’s fast will almost certainly cause nausea. Start with dates and water, pray Maghrib, then come back to your main meal gradually.
Wegovy And Ozempic During Ramadan
Both contain semaglutide. Both are weekly. The advice is similar to Mounjaro, with one addition.
Keep your weekly schedule and stay on your current dose. If you’re still titrating up, talk to your pharmacist about pausing the increase until after Ramadan.
Ozempic users on diabetes medication need extra care with blood sugar. Semaglutide lowers glucose, and fasting lowers glucose. Together, the risk of hypoglycaemia goes up, especially in week one. Monitor more often. Shakiness, sweating, dizziness, and confusion are warning signs. Keep dates or fruit juice within reach.
Wegovy users prescribed for weight loss only, without diabetes, face lower hypoglycaemia risk. Nausea and dehydration are still the main concerns.
Saxenda During Ramadan
Saxenda (liraglutide) is daily, which takes more thought. Pick a consistent time within your non-fasting hours and commit to it for the month. Shortly after Iftar works for most people.
Because you’re getting a daily dose, GLP-1 side effects don’t come in waves. They’re just there. If nausea and appetite suppression make it hard to eat enough at Suhoor and Iftar, tell your pharmacist. They may suggest a temporary dose reduction.
One thing worth knowing: if you stop Saxenda, you’ll likely need to re-titrate from the starting dose when you restart. With the weekly injections you can usually pick up where you left off. With Saxenda it’s more of a reset.
When To Inject During Ramadan
Two windows: after Iftar or before Suhoor. Both work. After Iftar is the more popular choice. You’ve broken your fast, you can eat and drink for hours, and side effects peak while you can manage them. Most clinicians recommend this.
Before Suhoor works if evenings are busy. The trade-off is that side effects may peak during fasting hours the next day, though for most people on a stable dose this isn’t a big issue.
Be consistent. Same day each week for Mounjaro, Wegovy, and Ozempic. Same time each day for Saxenda.
Missed a weekly dose? Take it as soon as you remember if your next dose is 3+ days away. Otherwise skip it. Never double up.
Managing Nausea And Dehydration While Fasting
Nausea
Your usual coping strategies disappear when you’re fasting. No sipping ginger tea at 2pm. No nibbling on crackers. You ride it out until Iftar.
What helps: eat slowly at Iftar (dates and water first, main meal later). Go lighter on fried food. I know that’s easier said than done when the table is full of pakoras, but greasy food on GLP-1 medication and an empty stomach is asking for trouble.
Don’t skip Suhoor. A protein-heavy pre-dawn meal (eggs, yoghurt, wholegrain toast) keeps you fuller and reduces the urge to overeat at Iftar, which is where the nausea cycle starts.
Dehydration
GLP-1 medications dampen your sense of thirst. During Ramadan, that means you might not drink enough during the hours when you actually can.
Drink water steadily between Iftar and Suhoor rather than all at once. Eat hydrating foods: cucumber, watermelon, yoghurt, soup. Cut back on caffeine.
If you’re getting regular headaches, dark urine, or dizziness, talk to your pharmacist about adjusting your dose.
Can You Stop Weight Loss Medication During Ramadan?
Yes. For weekly injections, a one-month break is unlikely to set you back. Ramadan fasting naturally reduces calorie intake. A 2023 Nutrition Journal study found a measurable drop in body fat percentage among fasting participants with obesity, even without medication.
For Saxenda, remember the re-titration. Let your pharmacist know before you stop so they can plan your restart after Eid.
Islam grants fasting exemptions for health conditions. Obesity is classified as a chronic medical condition. If fasting without medication would put your health at risk, speak to your pharmacist and your Imam.
How Pharmacy M Can Help
Our pharmacists support patients through Ramadan every year. We can help with injection timing, side effect management, treatment plan reviews, and restarting safely after Eid.
Call us at +44 1709 252669. Or visit us for consultation from Monday to Sunday. No obligation. We’d rather you asked the question than spent the month guessing.
Ramadan Mubarak from everyone at Pharmacy M.
FAQs
Can I take medication while fasting for weight loss?
Yes. Most oral medications and all subcutaneous injections can be taken during non-fasting hours. Always confirm with your pharmacist, as some medications require food or have specific timing requirements.
Can I take weight loss injections during Ramadan?
Yes. Subcutaneous injections including Mounjaro weight loss injection, Wegovy, Ozempic, and Saxenda do not break the fast according to the International Islamic Fiqh Academy (1997). Inject after Iftar or before Suhoor.
How do I take medication during Ramadan?
Schedule doses within your non-fasting window. After Iftar is preferred for most medical weight loss injections UK patients use. Keep the day and time consistent and do not increase doses during Ramadan.
What is the best way to lose weight during Ramadan?
Understanding how GLP-1 injections work helps here. Mounjaro mechanism of action involves both GLP-1 and GIP weight loss pathways, meaning it reduces appetite and slows digestion even while you fast. Prioritise protein at Suhoor and Iftar, avoid high-fat fried foods, eat slowly, and stay hydrated between Iftar and Suhoor.
How to lose 10kg in a month during Ramadan?
A 10kg monthly target is not realistic or safe on any treatment. On the Mounjaro dosing schedule UK clinicians follow, typical loss is 0.5 to 1 kg per week. Ramadan fasting supports a calorie deficit, but rapid loss increases muscle loss and dehydration risk.
How can I maximise my fat loss while fasting?
Stay consistent with your Mounjaro weekly injection schedule, eat a protein-focused Suhoor to preserve muscle, and keep Iftar portions moderate to avoid glucose spikes. When comparing Mounjaro vs Wegovy how it works differs slightly as Mounjaro activates both GIP and GLP-1 receptors, which research suggests produces greater average weight loss.
