Answer
Tablets prevent or relieve asthma-related bronchospasm. Injections reverse low blood pressure caused by spinal or epidural anaesthesia.
Sources for this answer
- Ephedrine Hydrochloride 30mg Tabletsemc · SmPC Current selected SmPC · Version 2
- Ephedrine Hydrochloride 30 mg/ml Solution for Injectionemc · SmPC Current selected SmPC · Version 5