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Pseudoephedrine: uses, side effects & brands
Pseudoephedrine is an oral decongestant for a blocked nose and sinuses. It belongs to the Nasal & decongestant medicine group. These relieve a blocked or runny nose from colds and allergies.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Nasal & decongestant medicine |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Blocked nose with a cold or flu
- Sinus congestion
- Allergic congestion (often combined with an antihistamine)
Common brand names
- India: Sudafed (combos), Nasoclear
- Worldwide: Sudafed
Common side effects
- Trouble sleeping
- Restlessness or jitteriness
- Fast heartbeat
- Dry mouth or headache
Before taking it — precautions
- Tell your doctor about high blood pressure, heart disease, thyroid problems, diabetes, glaucoma or prostate trouble
- Must not be taken with MAOI antidepressants
- Check other cold remedies so you do not take a decongestant twice
When to see a doctor urgently
- Chest pain or fast, irregular heartbeat (urgent)
- Severe headache, confusion or vision change (urgent)
- Unable to pass urine, or hallucinations
Not a prescription — no dose shown. The right dose of pseudoephedrine depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Will it keep me awake?
It can — avoid taking it late in the day.
Is it the same as phenylephrine in cold tablets?
No — unlike phenylephrine, pseudoephedrine is well absorbed when taken by mouth and is more effective as an oral decongestant.
Can I take it with high blood pressure?
Ask your doctor first — it can raise blood pressure.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.