Minipress XL 5

Tablet · Pfizer
PRESCRIPTION MEDICINE

Minipress XL 5 is a tablet made by Pfizer that contains Prazosin 5 mg (slow release). Prazosin is a blood pressure medicine (alpha blocker): lowers blood pressure; also eases urine flow in an enlarged prostate.

Ingredient (salt)Amount
Prazosin5 mg (slow release)

What it is used for

Lowers blood pressure; also eases urine flow in an enlarged prostate.

How it works

An alpha blocker that relaxes blood vessels; for high blood pressure, prostate symptoms and sometimes nightmares in PTSD.

How to take it

Start with a low dose at bedtime because the first dose can cause fainting.

Common side effects

  • Dizziness
  • Tiredness
  • Headache
  • Stuffy nose

Get medical help straight away if

  • Fainting
  • Painful erection lasting more than 4 hours

Be careful

Can cause dizziness on standing, especially after the first dose.

Other medicines and interactions

Adds to the effect of other blood pressure medicines and PDE-5 inhibitors (sildenafil).

Pregnancy and breastfeeding

Ask your doctor; used in pregnancy only if needed.

Same composition, other brands (1)

Prazopress XL 5

Ask your doctor or pharmacist before switching brands.

Common questions

What is Minipress XL 5?

Minipress XL 5 is a tablet by Pfizer containing Prazosin 5 mg (slow release).

What is Minipress XL 5 used for?

Lowers blood pressure; also eases urine flow in an enlarged prostate.

How should I take Minipress XL 5?

Start with a low dose at bedtime because the first dose can cause fainting. Always follow the dose your doctor or the pack gives.

What are the side effects of Minipress XL 5?

Common side effects include: Dizziness, tiredness, headache, stuffy nose. Get medical help straight away for: Fainting, painful erection lasting more than 4 hours.

Does Minipress XL 5 need a prescription?

Yes. In India it is a prescription (Schedule H) medicine, so a pharmacist should sell it only with a doctor's prescription.

Can I take Minipress XL 5 in pregnancy or while breastfeeding?

Ask your doctor; used in pregnancy only if needed.

What are the substitutes for Minipress XL 5?

Brands with the same composition: Prazopress XL 5. Ask your doctor or pharmacist before switching.

Sources and further reading

NHS (UK National Health Service) and MedlinePlus (US National Library of Medicine) are free, reviewed medicine guides. Brand names and doses there may differ from India.

Composition checked against pack details from large Indian online pharmacies. Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. This page is a plain-language summary written from standard prescribing information and the public guides linked below. Brands sometimes change their formula, so always check the composition printed on the pack. Doses here are typical adult doses; yours may differ. Do not start, stop or change a medicine without your doctor or pharmacist, and keep all medicines away from children. In an emergency, call 112 (India) or your local emergency number.