Not medical advice. This information is for educational purposes only. Always consult a qualified doctor or pharmacist before taking any medicine. Olmesartan requires a valid prescription.
Olmesartan
Generic Name: OLMESARTAN MEDOXOMIL-HYDROCHLOROTHIAZIDE
Olmesartan medoxomil and hydrochlorothiazide is a combination of an angiotensin II receptor antagonist (AT 1 subtype), olmesartan medoxomil, and a thiazide diuretic, hydrochlorothiazide (HCTZ).
Data last updated: 30 March 2026 · Source: openFDA.gov, DailyMed (NLM/NIH)
Common Brand Names in India:
What is Olmesartan Used For?
- Hypertension
How Does It Work?
Olmesartan blocks the vasoconstrictor effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT 1 receptor in vascular smooth muscle.
Dosage & Administration
- The recommended starting dose of olmesartan medoxomil and hydrochlorothiazide is 40/12.5 mg once daily in patients whose blood pressure is not adequately controlled with olmesartan monotherapy.
- Dose can be titrated up to 40 /25 mg if necessary.
- The recommended starting dose of olmesartan medoxomil and hydrochlorothiazide is 20/12.5 mg once daily in patients whose blood pressure is not adequately controlled with HCT monotherapy or who experience dose-limiting adverse reactions with hydrochlorothiazide.
Side Effects
Common Side Effects
Serious Side Effects (seek immediate medical attention)
Warnings & Precautions
- Hypotension: Correct volume-depletion prior to administration. Monitor renal function and potassium in susceptible patients Observe for signs of fluid or electrolyte imbalance. Acute angle-closure glaucoma Sprue-like enteropathy has been reported.
- Patients whose renal function may depend in part on the activity of the renin-angiotensin system ( e.g. , patients with renal artery stenosis, chronic kidney disease, severe congestive heart failure, or volume depletion) may be at particular risk of developing acute renal failure on olmesartan medoxomil and hydrochlorothiazide.
Who Should NOT Take This?
- Hypersensitivity to any component of olmesartan medoxomil and hydrochlorothiazide ( 4 ) Anuria ( 4 ) Do not co-administer aliskiren with olmesartan medoxomil and hydrochlorothiazide in patients with diabetes. ( 4 )
Drug Interactions
Olmesartan may interact with the following medicines. Always inform your doctor about all medications you are taking.
Storage Instructions
Store at room temperature, away from moisture and heat.
Speak to a cardiologist on Zospital
Consult a cardiologist on Zospital before starting Olmesartan. Verified Indian specialists available for in-clinic and online consultations.
Other Blood Pressure Medicines
Sources: openFDA.gov · dailymed.nlm.nih.gov · nlm.nih.gov (RxNorm). Information is for educational purposes only. Consult a doctor before use.
FAQS
Olmesartan – Frequently Asked Questions
Common questions about Olmesartan, its uses, dosage and safety.
Olmesartan is commonly prescribed in India for: Hypertension. Always confirm the indication with a registered medical practitioner before starting any course.
Olmesartan is sold in India under brand names such as Olsar, Benicar, Olmezest, Tribenzor, Benicar HCT, Azor. You can also find it on online pharmacies like 1mg, Pharmeasy and Apollo Pharmacy.
Olmesartan is a prescription-only (Schedule H) medicine in India. You will need a valid prescription from a registered MBBS / MD doctor to purchase it from a licensed pharmacy.
Common side effects of Olmesartan can include: Nausea, Vomiting, Diarrhea, Dizziness, Rash, Abdominal pain, Weakness, Cough. Less common but serious side effects can include: Fatal, Death, Anaphylactic, Agranulocytosis, Aplastic. Stop the medicine and contact your doctor immediately if any of these appear.
Olmesartan blocks the vasoconstrictor effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT 1 receptor in vascular smooth muscle.
Olmesartan can interact with: Steroidal, Colesevelam, Cholestyramine, Coadministration, Olmesartan, Hydrochlorothiazide. Tell your doctor about every medicine, supplement and herbal product you take — including ayurvedic and homeopathy preparations — before starting Olmesartan.
Indian guidelines often recommend lower starting doses of Olmesartan for patients above 60-65, since kidney and liver function decline with age. A doctor should review the dose, especially if the patient already takes BP, sugar or heart medicines.
Pregnancy safety of Olmesartan depends on the trimester and individual case. Indian gynaecologists usually avoid Category C/D drugs unless benefit clearly outweighs risk. Speak to your obstetrician before taking Olmesartan during pregnancy or while planning conception.
Prices in India typically range from ₹30 – ₹250 per strip of 10 tablets depending on brand. Generic versions tend to cost 30-60% less than branded ones, and Jan Aushadhi outlets often stock the lowest-priced equivalents. Check 1mg or Pharmeasy for live MRP.
If you remember within a few hours of the missed dose, take it. If it is nearly time for the next dose, skip the missed one — never double up. Frequent missed doses reduce Olmesartan's effectiveness, so consider setting a reminder or speaking to your doctor about a simpler schedule.
You can book an in-person or online consultation with a verified Indian specialist on Zospital — visit the doctor directory at https://zospital.com/doctor to find one near you.
Medical Disclaimer
The content provided on Zospital is for general informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. If you think you may have a medical emergency, call your doctor or emergency services immediately.