Side effects cannot be anticipated. If any side effects develop or change in intensity, tell your doctor immediately. Only your doctor can determine whether it is safe for you to continue taking Levsin.

• Side effects may include:
  Allergic reactions, bloating, blurred vision, confusion, constipation, decreased sweating, dilated pupils, dizziness, drowsiness, dry mouth, excitement, headache, hives, impotence, inability to urinate, insomnia, itching, heart palpitations, lack of coordination, loss of sense of taste, nausea, nervousness, rapid heartbeat, skin reactions, speech problems, vomiting, weakness

Do not take Levsin if you have ever had an allergic reaction to it or similar drugs such as scopolamine. Also, you should not be given Levsin if you have any of the following:

Bowel or digestive tract obstruction or paralysis
Glaucoma (excessive pressure in the eyes)
Myasthenia gravis (a disorder in which muscles become weak and tire easily)
Ulcerative colitis (severe bowel inflammation)
Urinary obstruction

Levsin is not appropriate if you have diarrhea, especially if you have a surgical opening to the bowels (an ileostomy or colostomy).

Be careful using Levsin if you have an overactive thyroid gland, heart disease, congestive heart failure, irregular heartbeats, high blood pressure, or kidney disease.

Because Levsin may make you dizzy or drowsy, or blur your vision, do not drive, operate other machinery, or do any other hazardous work while taking Levsin.

While you are taking Levsin, you may experience confusion, disorientation, short-term memory loss, hallucinations, difficulty speaking, lack of coordination, coma, an exaggerated sense of well-being, decreased anxiety, fatigue, sleeplessness and agitation. These symptoms should disappear 12 to 48 hours after you stop taking the drug.

People who must avoid phenylalanine should note that NuLev tablets contain this substance.