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In this Article

• 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 should I discuss with my healthcare provider before taking hyoscyamine?

Do not take this medication if you are allergic to hyoscyamine, or if you have:

• kidney disease;
• an enlarged prostate or problems with urination;
• intestinal blockage;
• severe ulcerative colitis, or toxic megacolon;
• glaucoma; or
• myasthenia gravis.

Before taking this medication, tell your doctor if you are allergic to any drugs, or if you have:

• heart disease, congestive heart failure;
• a heart rhythm disorder;
• high blood pressure;
• overactive thyroid; or
• hiatal hernia with GERD (gastroesophageal reflux disease).

If you have any of these conditions, you may need a dose adjustment or special tests to safely take hyoscyamine.

FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Hyoscyamine can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

How should I take hyoscyamine?

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.

Your medication may come with patient instructions for safe and effective use. Follow these directions carefully. Ask your doctor or pharmacist if you have any questions.

Do not crush, chew, break, or open an extended-release tablet or capsule. Swallow the pill whole. It is specially made to release medicine slowly in the body. Breaking or opening the pill would cause too much of the drug to be released at one time.

Measure the oral liquid form of hyoscyamine with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.

The sublingual tablet form of this medication must be placed under the tongue, where it will dissolve. Do not swallow the sublingual tablet whole or wash it down with water. You may drink water after the pill has completely dissolved in your mouth.

Before using hyoscyamine oral spray for the first time, you must prime the spray pump. To do this, spray 3 test sprays into the air and away from your face. Prime the spray pump at least 1 test spray any time you have not used the oral spray for longer than 2 days. Spray until a fine mist appears.

After using the oral spray, try not to swallow right away. Do not rinse your mouth or spit for 5 to 10 minutes after using the oral spray.

Hyoscyamine is usually taken before a meal. Follow your doctor's instructions.

Store this medication at room temperature away from moisture and heat.

Do not use hyoscyamine oral spray for more than 30 sprays, even if there is medicine still left in the bottle.