Answer
The preservatives phenol and m-cresol in Hypurin Porcine Isophane (porcine insulin) can cause allergic reactions.
Sources for this answer
- Hypurin Porcine Isophane Cartridges (PL 29831/0122)Wockhardt UK Ltd · emc · SmPC §4.8 Undesirable effects · Version 10Document updated
Sources checked