Irwan Mohd SubriZizi Azlinda Mohd YusofNur Zaireena ZainalAmir Husin Mohd NoorFitriah WardiAzman Ab RahmanMohd Nasir Abdul MajidNadeeya ‘Ayn Umaisara Mohamad Nor2024-05-272024-05-27201921/2/20202477-9083https://revista.religacion.com/index.php/religacion/article/view/739https://oarep.usim.edu.my/handle/123456789/3490Fatwa on Clexane and Fraxiparine which are used for Venous Thromboembolism (VTE) during pregnancy and puerperium, imposed by the Malaysian National Fatwa Council (MNFC) in 2009 stating that both types of low molecular weight heparin (LMWH) is prohibited except in darurah only due to its porcine preparation ground. Thus, this paper embarks to expound to which extent unlawful sources for medical prevention and treatment can be used for Muslim consumption. Is it only when a darurah condition is announced as an exemption situation that the intoxicating material is allowed in medicine? This research employs qualitative methodology using document review method to analyse the content of the document including medical journals and Shariah books. Observing the alarming maternal mortality due to VTE during pregnancy and puerperium in Malaysia nowadays, it is true that VTE is a fatal and life threatening illness. Due to that, LMWH is recommended by the Ministry Health of Malaysia (MOH). With LMWH features of accessibility, feasibility, effective and safety profile, it becomes the first line of option among O&G doctors in Malaysia albeit it is porcine based. Therefore, this paper found that the prevention of VTE using LMWH when diagnosed as a moderate risk during pregnancy and low risk during puerperium is allowed in the shariah perspective based on Islamic legal maxim namely Al-Hajah Tunazzal Manzilah Darurah.en-USLow Molecular Weight Heparin (LMWH), Venous thromboembolism (VTE), Darurah, Al-hajah tunazzal manzilah darurah.Article57858641