If you think you or someone else may have taken an overdose, get emergency help at once. Taking an overdose of any of the belladonna alkaloids or taking scopolamine with alcohol or other central nervous system (CNS) depressants may lead to unconsciousness and possibly death. Some signs of overdose are clumsiness or unsteadiness; dizziness; severe drowsiness; fever; hallucinations (seeing, hearing, or feeling things that are not there); confusion; shortness of breath or troubled breathing; slurred speech; unusual excitement, nervousness, restlessness, or irritability; fast heartbeat; and unusual warmth, dryness, and flushing of skin.
These medicines may make you sweat less, causing your body temperature to increase. Use extra care not to become overheated during exercise or hot weather while you are taking this medicine, since overheating may result in heat stroke. Also, hot baths or saunas may make you dizzy or faint while you are taking this medicine.
Check with your doctor before you stop using this medicine. Your doctor may want you to reduce gradually the amount you are using before stopping completely. Stopping this medicine may cause withdrawal side effects such as vomiting, sweating, and dizziness.
Anticholinergics and antispasmodics may cause some people to have blurred vision. Make sure your vision is clear before you drive or do anything else that could be dangerous if you are not able to see well. These medicines may also cause your eyes to become more sensitive to light than they are normally. Wearing sunglasses may help lessen the discomfort from bright light.
These medicines, especially in high doses, may cause some people to become dizzy or drowsy. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert.
Dizziness, lightheadedness, or fainting may occur, especially when you get up from a lying or sitting position. Getting up slowly may help lessen this problem.
These medicines may cause dryness of the mouth, nose, and throat. For temporary relief of mouth dryness, use sugarless candy or gum, melt bits of ice in your mouth, or use a saliva substitute. However, if your mouth continues to feel dry for more than 2 weeks, check with your medical doctor or dentist. Continuing dryness of the mouth may increase the chance of dental disease, including tooth decay, gum disease, and fungus infections.
For patients taking scopolamine:
- This medicine will add to the effects of alcohol and other CNS depressants (medicines that slow down the nervous system, possibly causing drowsiness). Some examples of CNS depressants are antihistamines or medicine for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; muscle relaxants; or anesthetics, including some dental anesthetics. Check with your doctor before taking any of the above while you are using this medicine.