The use of ephedrine, especially through injection, carries severe health risks and should only occur under direct medical supervision. Potential complications include:
- Cardiovascular Stress: It can cause rapid heart rate (tachycardia), palpitations, and significant increases in blood pressure, which may lead to heart attack or stroke.
- Neurological Effects: High doses can result in seizures, severe anxiety, and insomnia.
- Injection Risks: Non-clinical injection carries high risks of infection, embolism, and permanent tissue damage.


