Before taking this medication, tell your doctor if you have
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liver disease;
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kidney disease;
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a blockage of your urinary tract (difficulty urinating);
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a blockage in your intestines or ulcerative colitis;
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glaucoma;
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porphyria;
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myasthenia gravis;
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numbness or tingling in your hands or feet;
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thyroid problems;
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high blood pressure, an irregular heartbeat, or any type of heart disease;
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a hiatal hernia or reflux disease;
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enlargement of the prostate; or
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asthma, chronic lung disease, or allergies.
You may not be able to take belladonna alkaloids and phenobarbital, or you may require a lower dose or special monitoring during treatment if you have any of the conditions listed above.
Belladonna alkaloids and phenobarbital is in the FDA pregnancy category C. This means that it is not known whether belladonna alkaloids and phenobarbital will harm an unborn baby. Do not take belladonna alkaloids and phenobarbital without first talking to your doctor if you are pregnant.
It is not known whether belladonna alkaloids and phenobarbital passes into breast milk. Do not take belladonna alkaloids and phenobarbital without first talking to your doctor if you are breast-feeding a baby.
Take belladonna alkaloids and phenobarbital exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Do not take more of this medication than is prescribed for you. Talk to your doctor if your symptoms are not being controlled.
To ensure that you get a correct dose, measure the liquid form of belladonna alkaloids and phenobarbital with a special dose-measuring spoon or cup, not with a regular tablespoon. If you do not have a dose-measuring device, ask your pharmacist where you can get one.
Do not crush, chew, or open any extended-release formulations of this medication. Swallow them whole. They are specially formulated to release slowly in your body.
Store belladonna alkaloids and phenobarbital at room temperature away from moisture and heat.
Take the missed dose as soon as you remember. However, if it is almost time for your next
dose, skip the missed dose and take only the next regularly scheduled dose.
If you experience any of the following serious side effects, stop taking belladonna alkaloids and phenobarbital and seek emergency medical attention:
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an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
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an irregular or fast heart rate; or
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eye pain.
Other, less serious side effects may be more likely to occur. Continue to take belladonna alkaloids and phenobarbital and talk to your doctor if you experience
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headache, dizziness, or lightheadedness;
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drowsiness;
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weakness or nervousness;
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blurred vision, large pupils, dry eyes, or sensitivity of the eyes to bright light;
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nausea, bloating, heartburn, or constipation;
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changes in taste;
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difficulty urinating;
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rash or flushing;
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decreased sweating; or
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nasal congestion, stuffiness, or a dry mouth.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
Use caution when driving, operating machinery, or performing other hazardous activities. Belladonna alkaloids and phenobarbital may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness or blurred vision, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking belladonna alkaloids and phenobarbital.
Avoid becoming overheated in hot weather. Belladonna alkaloids and phenobarbital increases the risk of heat stroke because it decreases sweating.
Use caution when driving, operating machinery, or performing other hazardous activities. Belladonna alkaloids and phenobarbital may cause dizziness, drowsiness, or blurred vision. If you experience dizziness, drowsiness or blurred vision, avoid these activities.
Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking belladonna alkaloids and phenobarbital.
Avoid becoming overheated in hot weather. Belladonna alkaloids and phenobarbital increases the risk of heat stroke because it decreases sweating.
Phenobarbital may decrease the effects of warfarin (Coumadin), which could result in the formation of blood clots. You may need a larger dose of warfarin while taking belladonna alkaloids and phenobarbital. Talk to your doctor before starting belladonna alkaloids and phenobarbital if you are taking warfarin.
Belladonna alkaloids and phenobarbital may increase the effects of other drugs that cause drowsiness, including antidepressants, alcohol, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, and muscle relaxants. Tell your doctor about all medicines that you are taking, and do not take any medicine unless your doctor approves.
Drugs other than those listed here may also interact with belladonna alkaloids and phenobarbital. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.
Seek emergency medical attention.
Symptoms of a belladonna alkaloids and phenobarbital overdose include headache; nausea; vomiting; dry mouth; restlessness; flushing; difficulty swallowing; blurred vision; dilated pupils; hot, dry skin; dizziness; drowsiness; confusion; anxiety; seizures; weak pulse; and an irregular heartbeat.
