Answered by: Maulana Tahsin Alam
At work, they’re issuing injections for all pregnant and miscarriage women. And for post-op patients. These injections prevent blood from clotting. Blood clots in the legs and lungs can be life-threatening.
I have recently discovered these injections contain pork.
As a nurse, I have to advise patients to have them. As a Muslim, I need to tell them what it contains. There is no other alternative medication according to the pharmacist.
Despite containing pork can Muslims have it?
بِسْمِ اللهِ الرَّحْمنِ الرَّحِيْم
In the name of Allah, the Most Gracious, the Most Merciful
If the situation is life-threatening and a reliable expert informs you that there is no alternative to using this type of (ḥarām) medicine, then it will be permissible for you to use and administer.
Only Allah SWT alone knows best.
Written by Maulana Tahsin Alam
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Mufti Taqi Usmani, Takmilah Fath Mulhim, volume 2 pg. 180.