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Hyoscyamine, Atropine, Scopolamine, and Phenobarbital
What is it? Overview Usage Side Effects and Warnings

Hyoscyamine, Atropine, Scopolamine, and Phenobarbital Side Effects and Warnings

Written by FoundHealth.

What are the precautions when taking this medicine?

• This medicine may be habit-forming with long-term use.

• If you have been taking this medicine for several weeks, talk with healthcare provider before stopping. You may want to gradually withdraw this medicine.

• If you are 65 or older, use this medicine with caution. You could have more side effects.

• If you have a history of drug or alcohol addiction, talk with healthcare provider.

• If you have heart disease, talk with healthcare provider.

• Check medicines with healthcare provider. This medicine may not mix well with other medicines.

• You may not be alert. Avoid driving, doing other tasks or activities until you see how this medicine affects you.

• Avoid alcohol (includes wine, beer, and liquor) or other medicines and natural products that slow your actions and reactions.

• You can get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen; wear protective clothing and eyewear.

• Be careful in hot weather. Drink plenty of fluids to prevent dehydration.

• Tell healthcare provider if you are pregnant or plan on getting pregnant.

• Tell healthcare provider if you are breast-feeding.

• Birth control pills and other hormone-based birth control may not work to prevent pregnancy. Use another form of birth control while taking this medicine.

What are some possible side effects of this medicine?

• Feeling lightheaded, sleepy, having blurred vision, or a change in thinking clearly. Avoid driving, doing other tasks or activities that require you to be alert or have clear vision until you see how this medicine affects you.

• Constipation. More liquids, regular exercise, or a fiber-containing diet may help. Talk with healthcare provider about a stool softener or laxative.

• Dry mouth. Frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.

Reasons to call healthcare provider immediately

• If you suspect an overdose, call your local poison control center or emergency department immediately.

• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.

• Feeling extremely tired or weak.

• Severe dizziness or passing out.

• Significant change in thinking clearly and logically.

• Severe constipation.

• Unable to pass urine.

• Any rash.

• No improvement in condition or feeling worse.



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