Non-Pseudo Sinus Decongestant Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (FEN-il-EF-rin)
Non-Pseudo Sinus Decongestant Oral Side Effects
Mild upset stomach, trouble sleeping, dizziness, lightheadedness, headache, nervousness, shaking, or fast heartbeat may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
This product may reduce blood flow to your hands or feet, causing them to feel cold. Smoking may worsen this effect. Dress warmly and avoid tobacco use.
If your doctor has directed you to take this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur:
- fast/irregular heartbeat
- severe/uncontrolled shaking
- difficulty urinating
Tell your doctor immediately if any of these rare but very serious side effects occur:
- seizures
- mental/mood changes (e.g., anxiety, panic, unusual thoughts/behavior)
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction:
- rash
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Non-Pseudo Sinus Decongestant Oral Precautions
Before taking phenylephrine, tell your doctor or pharmacist if you are allergic to it; or to pseudoephedrine/ephedrine; or if you have any other allergies.
Before using this medication, tell your doctor or pharmacist your medical history, especially of:
- blood vessel problems (e.g., Raynaud's disease, low blood flow to the brain/legs/hands)
- high blood pressure
- diabetes
- glaucoma
- heart disease (e.g., angina, fast/irregular heartbeat, heart failure)
- mental/mood disorders (e.g., anxiety, bipolar disorder, mania)
- difficulty sleeping
- seizure disorder
- overactive thyroid (hyperthyroidism)
- trouble urinating (e.g., due to enlarged prostate)
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