Brand Names: Anaspaz, Cystospaz, Hyospaz, Hyosyne, Levbid, Levsin, Levsin SL, Levsinex SR, Symax Duotab, Symax SL, Symax SR

Generic Name: hyoscyamine (Pronunciation: hye oh SYE a meen)

• What is hyoscyamine (Levsin SL)?
• What are the possible side effects of hyoscyamine?
• What is the most important information I should know about hyoscyamine?
• What should I discuss with my healthcare provider before taking hyoscyamine?
• How should I take hyoscyamine?
• What happens if I miss a dose?
• What happens if I overdose?
• What should I avoid while taking hyoscyamine?
• What other drugs will affect hyoscyamine?
• Where can I get more information?

What is hyoscyamine (Levsin SL)?

Hyoscyamine produces many effects in the body, including relief from muscle spasms.

Hyoscyamine also reduces the fluid secretions of many organs and glands in the body, such as the stomach, pancreas, lungs, saliva glands, sweat glands, and nasal passages.

Hyoscyamine is used to treat many different stomach and intestinal disorders, including peptic ulcer and irritable bowel syndrome. It is also used to control muscle spasms in the bladder, kidneys, or digestive tract, and to reduce stomach acid. Hyoscyamine is sometimes used to reduce tremors and rigid muscles in people with symptoms of Parkinson's disease.

Hyoscyamine is also used as a drying agent to control excessive salivation, runny nose, or excessive sweating.

Hyoscyamine may also be used for other purposes not listed in this medication guide.

Anaspaz 0.125 mg

round, yellow, imprinted with 225 295, Logo

Cystospaz 0.15 mg

round, blue, imprinted with W 2225

Hyoscyamine 0.125 mg SL-ACT

round, blue, imprinted with A155

Hyoscyamine 0.125 mg SL-KU

round, white, imprinted with 102, KU

Hyoscyamine 0.125 mg-ETH

elliptical, white, imprinted with ETH, 274

Hyoscyamine 0.375 mg SR-ETH

brown/white, imprinted with ETHEX, 017

Hyoscyamine SR 0.375 mg-ETH

oblong, orange, imprinted with ETHEX, 237

Hyoscyamine SR 0.375 mg-KU

oblong, orange, imprinted with KU 108

Hyospas 0.15 mg

round, blue, imprinted with H 111

Levbid 0.375 mg

oblong, orange, imprinted with SP 538

Levsin 0.125 mg SL

octagonal, blue, imprinted with SCHWARZ, 532

Levsin 0.125 mg

round, white, imprinted with SCHWARZ, 531

Symax Dutotab 0.375 mg

oblong, blue/white, imprinted with SYMAX, DUOTAB

What are the possible side effects of hyoscyamine?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using hyoscyamine and call your doctor at once if you have any of these serious side effects:

• diarrhea;
• confusion, hallucinations;
• unusual thoughts or behavior;
• fast, pounding, or uneven heart rate;
• rash or flushing; or
• eye pain.

Less serious side effects may include:

• dizziness, drowsiness, feeling nervous;
• blurred vision, headache;
• sleep problems (insomnia);
• nausea, vomiting, bloating, heartburn, or constipation;
• changes in taste;
• problems with urination;
• decreased sweating;
• dry mouth; or
• impotence, loss of interest in sex, or trouble having an orgasm.

This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about hyoscyamine?

Do not take this medication if you are allergic to hyoscyamine, or if you have kidney disease, a bladder or intestinal obstruction, severe ulcerative colitis, toxic megacolon, glaucoma, or myasthenia gravis.

Before taking hyoscyamine, tell your doctor if you have heart disease, congestive heart failure, a heart rhythm disorder, high blood pressure, overactive thyroid, or hiatal hernia with gastroesophageal reflux disease.

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.

Hyoscyamine can cause side effects that may impair your vision, thinking, or reactions. Be careful if you drive or do anything that requires you to be awake and able to see clearly.

Avoid drinking alcohol. It can increase drowsiness and dizziness while you are taking hyoscyamine.

Avoid becoming overheated or dehydrated during exercise and in hot weather. Because hyoscyamine reduces sweating, it can increase your risk of heat stroke.