Phenylfenesin Side Effects
Generic name: guaifenesin / phenylephrine / phenylpropanolamine
Note: This document provides detailed information about Phenylfenesin Side Effects associated with guaifenesin / phenylephrine / phenylpropanolamine. Some dosage forms listed on this page may not apply specifically to the brand name Phenylfenesin.
Applies to guaifenesin / phenylephrine / phenylpropanolamine: oral capsule, oral liquid.
Important warnings
This medicine can cause some serious health issues
Phenylpropanolamine, an ingredient in this product, has been associated with an increased risk of hemorrhagic stroke (bleeding into the brain or into tissue surrounding the brain) in women.
Men may also be at risk.
Although the risk of hemorrhagic stroke is low, the U.S.
Food and Drug Administration (FDA) recommends that consumers not use any products that contain phenylpropanolamine.
Drink plenty of extra fluids while taking this medication.
Do not crush or chew the tablets.
Swallow them whole or break them in half where they are scored to make them easier to swallow if needed.
No serious side effects from guaifenesin / phenylephrine / phenylpropanolamine are expected. Stop taking guaifenesin / phenylephrine / phenylpropanolamine and seek emergency medical attention if you experience an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives).
Other, less serious side effects may be more likely to occur. Continue to take guaifenesin / phenylephrine / phenylpropanolamine and talk to your doctor if you experience
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dizziness or headache;
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nervousness, restlessness, or insomnia;
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nausea or stomach upset; or
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difficulty urinating.
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.
More about Phenylfenesin (guaifenesin / phenylephrine / phenylpropanolamine)
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Further information
Phenylfenesin side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.