Avoid taking antacids at the same time you take hyoscyamine. Antacids can make it harder for your body to absorb hyoscyamine. If you use an antacid, take it after you have taken hyoscyamine and eaten a meal.
Drinking alcohol with  hyoscyamine can cause side effects.
Avoid becoming overheated or dehydrated during exercise and in hot weather. Hyoscyamine can decrease sweating and you may be more prone to heat stroke.
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.
