I am having soo much headache, I took paracetamol at 5pm, then diazin can I take ibuprofen now it's 9:22pm

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Quick answer: Yes, you can generally take ibuprofen ~4 hours after paracetamol - they work by different mechanisms and can be safely combined or alternated. However, I need to clarify what "diazin" is, as that could change the advice significantly.
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Before I give you a full answer, I need to clarify one thing:
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What is 'diazin' you took? Do you mean one of these?

Diazene for acidity

Quick answer: "Diazene" for acidity is likely a brand name for an antacid or acid reducer (possibly containing famotidine, ranitidine, or similar). Taking ibuprofen with an antacid is generally fine - the antacid actually helps protect your stomach from ibuprofen's irritating effects. Since it's been ~4+ hours since paracetamol, ibuprofen is safe to add.
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can you take ibuprofen after paracetamol and antacid same day safe interval

Here is a clear breakdown for your situation:

Your Medications Tonight

DrugTaken atPurpose
Paracetamol5:00 PMHeadache
Diazene (antacid)?Acidity
IbuprofenNow (9:22 PM)Headache

Can You Take Ibuprofen Now?

Yes, it is safe. Here's why:
  1. Paracetamol + Ibuprofen is a safe combination. They work by completely different mechanisms - paracetamol acts centrally, ibuprofen is an anti-inflammatory (NSAID). The NHS confirms they can be taken together or alternated safely in adults 16+.
  2. Timing is fine. It has been over 4 hours since your paracetamol - well within safe alternating guidelines.
  3. Diazene (antacid) actually helps. Ibuprofen can irritate the stomach lining. Taking an antacid alongside or before ibuprofen is actually protective. However, if Diazene contains certain ingredients (like some antacids with magnesium/aluminium), take ibuprofen at least 1-2 hours apart from the antacid to avoid absorption interference.

Important Dosing Reminders

  • Ibuprofen dose: 200-400 mg now. Maximum 400 mg three times a day.
  • Always take ibuprofen WITH food or milk - do not take on an empty stomach, especially since you have acidity.
  • Do not exceed: 8 paracetamol tablets (4g) or 1200 mg ibuprofen in 24 hours (OTC limits).

When to Be Cautious

  • Do not take ibuprofen if you have: a stomach ulcer, asthma triggered by NSAIDs, kidney disease, or are pregnant.
  • If your headache has not improved after taking both paracetamol and ibuprofen, or if it is very severe, sudden ("thunderclap"), or accompanied by stiff neck/visual changes, seek medical attention promptly.

Bottom line: Go ahead and take ibuprofen now with some food. The combination is safe and ibuprofen is actually a first-line choice for tension headaches at 400-800 mg. Feel better soon!
Disclaimer: This is general health information, not a substitute for advice from your doctor or pharmacist who knows your full medical history.
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