Hyoscyamine
Why this is used
Hyoscyamine is used to control symptoms associated with disorders of the gastrointestinal (GI) tract. It works by decreasing the motion of the stomach and intestines and the secretion of stomach fluids, including acid. Hyoscyamine is also used in the treatment of bladder spasms, peptic ulcer disease, diverticulitis, colic, irritable bowel syndrome, cystitis, and pancreatitis. Hyoscyamine may also be used to treat certain heart conditions, to control the symptoms of Parkinson's disease and rhinitis (runny nose), and to reduce excess saliva production.
How to take it
Hyoscyamine comes as a tablet, an extended-release (long-acting) capsule, and a liquid to take by mouth. The tablets and liquid are usually taken three or four times a day. The extended-release capsules are usually taken twice a day.. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take hyoscyamine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Swallow the extended-release tablets whole; do not split, chew, or crush them. Hyoscyamine controls symptoms associated with disorders of the GI tract, but it does not cure the disorders. Continue to take hyoscyamine even if you feel well. Do not stop taking hyoscyamine without talking to your doctor.
Side effects
<p></p> <p></p> <p></p> <p>Hyoscyamine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
<ul>
<li>
drowsiness</li>
<li>
dizziness or lightheadedness</li>
<li>
headache</li>
<li>
blurred vision</li>
<li>
flushing (feeling of warmth)</li>
<li>
dry mouth</li>
<li>
constipation</li>
<li>
difficulty urinating</li>
<li>
increased sensitivity to light</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
diarrhea</li>
<li>
skin rash</li>
<li>
eye pain</li>
<li>
fast or irregular heartbeat</li></ul>Hyoscyamine may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
<ul>
<li>
drowsiness</li>
<li>
dizziness or lightheadedness</li>
<li>
headache</li>
<li>
blurred vision</li>
<li>
flushing (feeling of warmth)</li>
<li>
dry mouth</li>
<li>
constipation</li>
<li>
difficulty urinating</li>
<li>
increased sensitivity to light</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
<ul>
<li>
diarrhea</li>
<li>
skin rash</li>
<li>
eye pain</li>
<li>
fast or irregular heartbeat</li></ul>Hyoscyamine may cause other side effects. Call your doctor if you have any unusual problems while you are taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>
Precautions
Before taking hyoscyamine, tell your doctor and pharmacist if you are allergic to hyoscyamine, any other medications, or any of the ingredients in hyoscyamine tablets, capsules, or liquid. Ask your doctor or pharmacist for a list of the ingredients.. tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking pr plan to take. Be sure to mention any of the following: amantadine (Symadine, Symmetrel), amitriptyline (Elavil), chlorpromazine (Thorazine), clomipramine (Anafranil), desipramine (Norpramin), doxepin (Sinequan), fluphenazine (Prolixin), haloperidol (Haldol), imipramine (Tofranil), medications containing belladonna (Donnatal), mesoridazine (Serentil), nortriptyline (Pamelor), perphenazine (Trilafon), phenelzine (Nardil), prochlorperazine (Compazine), promazine (Sparine), promethazine (Phenergan), protriptyline (Vivactil), thioridazine (Mellaril), tranylcypromine (Parnate), trifluoperazine (Stelazine), triflupromazine (Vesprin), trimeprazine (Temaril), and trimipramine (Surmontil). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. be aware that antacids may interfere with hyoscyamine, making it less effective. Take hyoscyamine 1 hour before or 2 hours after antacids. tell your doctor if you have or have ever had glaucoma; heart, lung, liver, or kidney disease; a urinary tract or intestinal obstruction; an enlarged prostate; ulcerative colitis; or myasthenia gravis. talk to your doctor about the risks and benefits of taking hyoscyamine if you are 65 years of age or older. Older adults should not usually take hyoscyamine because it is not as safe and may not be as effective as other medications that can be used to treat the same condition. if you are having surgery, including dental surgery, tell your doctor or dentist that you take hyoscyamine. you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how hyoscyamine affects you. ask your doctor about the safe use of alcohol during your treatment with hyoscyamine. Alcohol can make the side effects of this medication worse.
Overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Educational reference only — talk to a pharmacist or prescriber about Hyoscyamine.