FatwaPerlisFasting
Permohonan Penjelasan Hukum Syarak Berkenaan Penggunaan Ubat Obesiti Ketika Berpuasa Dan Pemakaian Continuous Glucose Monitor (Cgm) Semasa Mandi Wajib
Do obesity injections such as Wegovy and Mounjaro break the fast, and does wearing a CGM affect the validity of the obligatory bath?
Short answer
Subcutaneous injections of Wegovy and Mounjaro do not break the fast, whether used for obesity or diabetes, because they are not eating or drinking and supply no nutrition.
A reference, not a fatwa. First sentence of the summary below — read the original fatwa and consult your state authority before acting.
- Authority
- Perlis State Mufti Department
- Date
- Status
- Opinion (irsyad)
- Series
- Panduan Hukum
- Topic
- Fasting
No evidence of gazettement in the source — this is not a gazetted fatwa.
Summary
Subcutaneous injections of Wegovy and Mounjaro do not break the fast, whether used for obesity or diabetes, because they are not eating or drinking and supply no nutrition. The prolonged fullness and delayed gastric emptying do not affect the fast as long as the formulation and method of administration involve no food substance or nutritional function. Wearing a CGM is likened to a wound dressing or fracture splint, so non-diabetic individuals may use it on the advice of a health professional due to pressing need. The obligatory bath is valid by spreading water over the whole body and wiping the sensor area with a wet hand, without removing the sensor or performing tayammum.
Written in our own words from the original fatwa — check the source before acting on it.
Suntikan subkutaneus Wegovy (semaglutide) dan Mounjaro (tirzepatide) tidak membatalkan puasa, sama ada untuk obesiti atau diabetes.
Read the full fatwa on the Perlis website (new tab)
How to cite
Cite the original fatwa and its authority. Rujuk Fatwa is only where you found it.
Perlis State Mufti Department. “Permohonan Penjelasan Hukum Syarak Berkenaan Penggunaan Ubat Obesiti Ketika Berpuasa Dan Pemakaian Continuous Glucose Monitor (Cgm) Semasa Mandi Wajib”, 30 October 2026. https://muftiperlis.gov.my/index.php/panduan-hukum/1770-permohonan-penjelasan-hukum-syarak-berkenaan-penggunaan-ubat-obesiti-ketika-berpuasa-dan-pemakaian-continuous-glucose-monitor-cgm-semasa-mandi-wajib. Found via Rujuk Fatwa: https://rujukfatwa.com/en/fatwa/ruling-obesity-injections-fasting-cgm-ritual-bath/