How does pseudoephedrine work?
Pseudoephedrine narrows the blood vessels in the nose and sinuses, reducing swelling and allowing air to flow more freely.
What is pseudoephedrine used to treat?
Pseudoephedrine is commonly used for:
- Nasal congestion due to colds or flu
- Sinusitis (sinus infections and inflammation)
- Hay fever and other allergies
- Eustachian tube congestion (ear pressure related to colds or air travel)
Who can take pseudoephedrine?
Pseudoephedrine is suitable for most adults and children over 12 years old.
Who might not be able to take pseudoephedrine?
Pseudoephedrine may not be suitable if you:
- Have high blood pressure or heart disease
- Have glaucoma
- Have an overactive thyroid (hyperthyroidism)
- Have diabetes
- Are taking certain antidepressants (such as MAOIs)
Can I take pseudoephedrine if I’m pregnant or breastfeeding?
Pseudoephedrine isn’t usually recommended during pregnancy or breastfeeding, as it may affect blood flow to the placenta or reduce milk supply.
What if I miss a dose?
Pseudoephedrine is usually taken as needed, so missing a dose is not usually a concern. Do not take extra to make up for a missed dose.
How effective is pseudoephedrine?
Pseudoephedrine is highly effective at relieving nasal congestion, typically working within 30 minutes and lasting up to 4 to 6 hours.
What should I do if I take too much?
Taking too much pseudoephedrine can cause rapid heartbeat, dizziness, restlessness, and high blood pressure. If you think you’ve taken too much, seek medical help immediately.
What dose of pseudoephedrine is usually taken?
- For adults and children over 12: 60mg every 4 to 6 hours, up to 240mg per day
Your doctor or pharmacist will determine the best dose for your condition.
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What are the side effects of pseudoephedrine?
Common side effects include:
- Increased heart rate
- Nervousness or restlessness
- Difficulty sleeping (insomnia)
- Dry mouth
Serious side effects, such as high blood pressure, irregular heartbeat, or severe allergic reactions, require urgent medical attention.
How should I take pseudoephedrine?
Pseudoephedrine is taken as tablets or liquid, usually with water and food to reduce stomach discomfort.
When should pseudoephedrine be taken?
Pseudoephedrine should be taken during the day to avoid sleep disturbances.
What are the brand names for pseudoephedrine?
Pseudoephedrine is available as a generic medicine, but some branded versions include:
- Sudafed
- Galpseud
Final thoughts
Pseudoephedrine is an effective decongestant for colds, flu, and sinus problems but should be used for short periods only to avoid rebound congestion. If symptoms persist or side effects occur, speak to your doctor or pharmacist.
