-amantadine
-antacids
-benztropine
-donepezil
-galantamine
-medicines for hay fever and other allergies
-medicines for mental depression
-medicines for mental problems or psychotic disturbances
-rivastigmine
-tacrine

They need to know if you have any of these conditions:
-difficulty passing urine
-glaucoma
-heart disease, or previous heart attack
-myasthenia gravis
-prostate trouble
-stomach obstruction
-ulcerative colitis
-an unusual or allergic reaction to hyoscyamine, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

You may get dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. To reduce the risk of dizzy or fainting spells, do not sit or stand up quickly, especially if you are an older patient. Alcohol can make you more dizzy. Avoid alcoholic drinks.

Stay out of bright light and wear sunglasses if this medicine makes your eyes more sensitive to light.

Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

Avoid extreme heat (e.g., hot tubs, saunas). This medicine can cause you to sweat less than normal. Your body temperature could increase to dangerous levels, which may lead to heat stroke.

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.