Olmesartan Tablet: Uses, Dosage & Side Effects in Pakistan

Olmesartan Tablet Uses, Dosage, Side Effects & Price in Pakistan

1. Quick Info (Mukhtasir Maloomat)

2. What is Olmesartan Tablet? (Olmesartan Tablet kya hai)

Olmesartan Tablet (Olmetec / Benicar) is used in Pakistan for high blood pressure and diabetic nephropathy. It is a medicine of the ARB (Angiotensin Receptor Blocker) class with Olmesartan medoxomil as the active ingredient. Olmesartan selectively blocks the AT1 (Type 1) receptor of Angiotensin II — preventing angiotensin II from causing vasoconstriction, aldosterone release, and sympathetic activation — resulting in lower blood pressure and kidney protection. It does not block the ACE enzyme — so bradykinin does not accumulate — there is no dry cough as seen with ACE inhibitors. This is a major advantage for South Asian patients. Important Warning: A rare but serious complication can occur with long-term use of Olmesartan — olmesartan-associated enteropathy — severe chronic diarrhoea resembling coeliac disease. It resolves on stopping the drug.

3. Uses (Fayde / Kis kaam aati hai)

• Hypertension — blood pressure control
• Diabetic nephropathy — kidney protection in diabetes (renoprotection)
• Cardiovascular risk reduction in hypertensive patients

4. Who Should Take (Kis ko leni chahiye)

• Hypertension patients for whom the doctor has prescribed it
• Diabetics with nephropathy or proteinuria
• Those who cannot tolerate the cough from ACE inhibitors — for ARB switch
• Doctor-prescribed patients for cardiovascular risk reduction

5. When NOT to Take (Kab nahi leni chahiye)

• Never in PREGNANCY — Category D foetal renal toxicity
• Bilateral renal artery stenosis — acute renal failure risk
• Severe hyperkalaemia
• Allergy to olmesartan or any ingredient
• With ACE inhibitors (dual RAAS blockade — avoid)

6. Dosage (Kitni leni hai)

• Hypertension: typically 20mg once daily
• Older patients / CKD: start with 10mg once daily

• Hypertension: 20–40mg once daily

• 40mg per day (once daily)

• If you forget a dose, take it as soon as you remember — if the next dose is soon, skip it. Never take a double dose.

7. How to Take (Kaise leni hai)

• As directed by your doctor — once daily

• Same time every day — for consistency

• Morning is preferred — or at the doctor-advised time

• With or without food — food does not affect absorption

8. Best Time (Kab leni chahiye)

• Morning — or at the time advised by your doctor

• Same time daily to maintain a routine

9. Empty Stomach or After Food (Khali pait ya khane ke baad)

Olmesartan can be taken with or without food — food does not affect absorption. However, if there is stomach upset, taking it after food is better.

10. Warnings (Ihtiyat)

• PREGNANCY CONTRAINDICATED — Category D foetal renal toxicity
• Bilateral renal artery stenosis
• Severe hyperkalemia

• Renal function and potassium: check 1-2 weeks after starting
• Olmesartan enteropathy alert: chronic diarrhoea with long-term use (months to years later) — resembling coeliac disease — stop drug, see doctor
• Angioedema alert (rare): swelling of lips/tongue/throat — STOP immediately, call emergency

11. Precautions (Ahm ehtiyaat)

• Store in a cool, dry place (below 30°C)
• Keep away from direct sunlight
• Keep out of the reach of children

• Volume-depleted patients: risk of first-dose hypotension — the first dose is kept low
• Diabetics: ARBs improve insulin sensitivity — monitor for hypoglycaemia
• Elderly: lower starting dose

12. Side Effects (Nuksanat)

• Dizziness (chakkar)
• Headache
• Fatigue
• Upper respiratory tract infection
• Back pain, diarrhoea, sinusitis
• Note: No dry cough as with ACEi — this side effect is absent with ARBs

• Olmesartan-associated enteropathy: severe chronic diarrhoea (coeliac-like symptoms) in long-term users — stop drug, see a gastroenterologist
• Angioedema (rare — less than with ACEi): face, lips, tongue, throat swelling — EMERGENCY — STOP drug immediately, call 115
• Severe hyperkalaemia — cardiac arrhythmia
• Renal impairment (bilateral RAS patients)
• Teratogenicity — foetal renal failure in pregnancy

13. Drug Interactions (Dawaon ke sath reaction)

• NSAIDs (ibuprofen/diclofenac): reduce antihypertensive effect + hyperkalemia + renal impairment — triple whammy
• Potassium-sparing diuretics / K supplements: spironolactone, amiloride, potassium tablets — hyperkalaemia risk
• ACE inhibitors: dual RAAS blockade — hyperkalemia + renal failure — generally avoid combination
• Lithium: olmesartan can increase lithium toxicity
• Antidiabetics (insulin/metformin): ARBs improve insulin sensitivity — monitor for hypoglycaemia

14. When to See Doctor (Kab doctor ke paas jayein)

• Chronic unexplained diarrhoea (weeks/months) — olmesartan enteropathy: stop the drug, see a gastroenterologist/doctor IMMEDIATELY
• EMERGENCY: Swelling of mouth, lips, tongue, throat — angioedema — STOP drug IMMEDIATELY and call 115
• Decreased urination — renal failure — check potassium
• Severe dizziness or fainting
• Irregular heartbeat — hyperkalaemia

15. Alternatives (Sasti Dusri Dawaein)

16. Price in Pakistan (Price kitni hai)

17. FAQs (Aksar poochay jane walay sawalat)

Q: Olmesartan kis kaam aata hai?

A: Olmesartan (Olmetec/Benicar) is used to lower blood pressure (BP), protect the kidneys in diabetes, and reduce cardiovascular risk. It is a medicine of the ARB class.

Q: Olmesartan ke side effects kya hain?

A: Common: dizziness, headache, fatigue. Serious (rare): olmesartan-associated enteropathy (chronic diarrhoea), angioedema, hyperkalemia. There is NO cough as with ACE inhibitors.

Q: Olmesartan ACE inhibitor se kaise alag hai?

A: Olmesartan is an ARB — it blocks the AT1 receptor. ACEi blocks the ACE enzyme. Key difference: ARBs do not cause bradykinin accumulation — NO dry cough. One unique risk: olmesartan-associated enteropathy.

Q: Olmesartan price Pakistan mein kitni hai?

A: Olmetec (Daiichi Sankyo) and local generics are available in Pakistan. Confirm the current price at a pharmacy or dawaai.pk.

Q: Olmesartan se chronic diarrhea kyun hota hai?

A: This is olmesartan-associated enteropathy — a rare coeliac-like condition that develops with long-term olmesartan use (months to years). An FDA warning exists. It resolves on stopping the drug. Noted only with olmesartan — not with other ARBs.

18. Medical Review (Medical jaiza)

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-06-17

19. Disclaimer (Zaroori tanbeeh)

The information on this page is for awareness only. It is not medical advice. Always consult your doctor or pharmacist before taking any medicine. PakVita is not responsible for any harm.