What are the serious side effects I can have if I overdose on Pantavit IT?
Serious side effects are rare and can occur if you take a higher than the recommended dose of Pantavit IT. You could have stomach pain that seems to be getting worse (sign of an inflamed liver or pancreas), back pain, fever, pain while peeing or blood in your urine (signs of kidney problems), rash and a slow or irregular heartbeat.