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Prazosin

Antihypertensive

Uses of Prazosin

  • Prazosin is primarily used to treat high blood pressure (hypertension) and symptoms of benign prostatic hyperplasia (BPH), such as difficulty in urination. 
  • It is also prescribed for managing post-traumatic stress disorder (PTSD)-related nightmares and anxiety.
  • It is also used for heart failure and Raynaud’s disease.

Side effects of Prazosin

  • Dizziness
  • Headache
  • Fatigue
  • Nausea
  • Palpitations
     

How Prazosin works

  • Prazosin is an alpha-1 adrenergic receptor blocker. 
  • It works by relaxing blood vessels so that blood can flow more easily, which helps in lowering blood pressure. In patients with BPH, it relaxes the muscles in the bladder and prostate, improving urine flow. 
  • For PTSD, it helps by reducing the frequency and severity of nightmares and related symptoms.

Certified content

Written By

docImg
Amit SharmaClinical Health & Medical Writer| 4 years

B. Pharm

Reviewed By

Amatul Ameen
Amatul Ameen Clinical Health & Medical Writer| 13 years

B. Pharm, MSc.

Expert Advice

Dosage Forms Available

  • Prazosin is available in oral dosage forms, typically as tablets.

Age and Dose Restrictions

  • Prazosin is generally not recommended for children unless explicitly prescribed by a healthcare provider. 

Contraindications

  • This medicine should not be used in individuals with a known allergy to Prazosin or any of its components. Caution is also advised in patients with a history of orthostatic hypotension or severe heart conditions.

Other Medications to Avoid

  • Avoid using Prazosin with other antihypertensives (like beta-blockers or calcium channel blockers), phosphodiesterase inhibitors (such as sildenafil or tadalafil), and alpha-blockers (like tamsulosin), as these can excessively lower blood pressure. Also, exercise caution with antidepressants, especially MAO inhibitors, and certain antipsychotics.

Overdose and Missed Dose

  • An overdose of Prazosin may lead to extremely low blood pressure, fainting, or shock. Immediate medical attention is advised in such cases. 
  • If you miss a dose, take it as soon as possible. If it's nearly time for the next dose, skip the missed one. Do not double the dose to make up for a missed one.

Management of Side Effects

  • To manage dizziness or light-headedness, especially after the first dose, it’s advisable to take the medication at bedtime. Rising slowly from a sitting or lying position can help reduce the risk of falls due to low blood pressure. Persistent side effects should be reported to a doctor for possible dose adjustment or alternative treatments.

Use in Driving and Operating Machinery

  • Prazosin can cause drowsiness or dizziness, especially when starting treatment or after dose changes. Avoid driving, using heavy machinery, or performing tasks requiring alertness until you know how the medication affects you.

Use in Pregnancy and Lactation

  • The use of Prazosin during pregnancy should only be considered if clearly needed and prescribed by a healthcare professional. It is not well-established if Prazosin is excreted in breast milk, so caution is advised during lactation.

Caution in Other Conditions

  • Caution is necessary in individuals with kidney or liver impairment, heart failure, low blood pressure, and those prone to fainting. It may also affect vision during cataract surgery; inform your ophthalmologist if you are on Prazosin.

Special Dietary and Lifestyle Recommendations

  • Limit alcohol consumption as it can amplify Prazosin’s blood pressure-lowering effects. 
  • Maintain a balanced diet rich in fruits, vegetables, lean protein, and whole grains. 
  • Stay hydrated and avoid excessive sodium intake. Regular monitoring of blood pressure is crucial to adjust treatment effectively.

Frequently asked questions

Prazosin begins to work within a few hours after ingestion, particularly for blood pressure reduction. For PTSD symptoms, it may take a few days to weeks to see noticeable improvement.

No, abruptly stopping Prazosin may cause a sudden spike in blood pressure or return of symptoms. Always consult your doctor before discontinuing or altering the dose.

Weight gain is not a common side effect of Prazosin. However, any significant weight changes should be reported to a healthcare provider for evaluation.

No, Prazosin is not habit-forming and does not lead to physical dependence when used as prescribed.

Yes, Prazosin can be taken with or without food. Taking it with food may help reduce stomach upset in some individuals.

Elderly individuals may be more sensitive to Prazosin’s blood pressure-lowering effects and are at higher risk for dizziness and falls. Close monitoring and cautious dose adjustments are recommended.

Prazosin should be used cautiously in patients with kidney impairment. Dose adjustments may be necessary, and regular monitoring is recommended.

Terms & Conditions

List of Medicines for Prazosin

Biozocin 2.5 Xl Tablet 15
Biozocin 2.5 Xl Tablet 15
Zydus Healthcare Ltd
Pack of 15 Units
₹126.65
MRP ₹253.8
50.1% OFF
Prazopress Xl 5 Tablet 30
Prazopress Xl 5 Tablet 30
Sun Pharma Laboratories Ltd.
Pack of 30 Units
₹447.2
MRP ₹559
20% OFF
Prazopress Xl 2.5 Tablet 30
Prazopress Xl 2.5 Tablet 30
Sun Pharma Laboratories Ltd.
Pack of 30 Units
₹319.2
MRP ₹399
20% OFF
Minipress Xl 5mg Tablet 30
Minipress Xl 5mg Tablet 30
Pfizer Ltd
Pack of 30 Units
₹550.82
MRP ₹688.53
20% OFF
Renopress Xl 5 Tablet 10
Renopress Xl 5 Tablet 10
La Renon Healthcare Private Limited
Pack of 10 Units
₹111.2
MRP ₹139
20% OFF
Biozocin 5 Xl Tablet 15
Biozocin 5 Xl Tablet 15
Zydus Healthcare Ltd
Pack of 15 Units
₹160.4
MRP ₹321.45
50.1% OFF
Prazopill Xl 5 Tablet 30
Prazopill Xl 5 Tablet 30
Intas Pharmaceuticals Ltd
Pack of 30 Units
₹355.4
MRP ₹444.25
20% OFF
Minipress Xl 2.5mg Tablet 30
Minipress Xl 2.5mg Tablet 30
Pfizer Ltd
Pack of 30 Units
₹441.76
MRP ₹552.2
20% OFF

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