Yes. Jains may take medicine when it is needed for health or to save life.

Key points from Jain dharma:

• Ahimsa (non-violence) applies to all living beings. Medicines should be chosen to minimize harm and should not involve unnecessary cruelty or killing.
• Many Jains prefer medicines that come from plants and minerals and avoid any ingredients derived from animals, especially those that involve harm to animals.
• Some Jain traditions avoid root vegetables and certain harvesting methods because of harm to underground life; this can influence what medicines are preferred. Differences between Digambar and Shwetambar can exist in details, but the core idea is to balance healing with non-violence.
• If a health need arises, treating it with appropriate medicine is allowed, and a Jain physician may help choose options that align with ahimsa.

If you want, I can look up a specific Jain text or guidance on medicine from a reliable Jain source.