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Prescription requiredMerck LtdAnti-hypertensive and Diuretic

Olmighty 20 H Tablet

Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)

₹78MRP ₹82In stock

Delivery across India. Free above ₹999; ₹49 from ₹499, ₹99 below. Chennai express delivery is chargeable.

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Olmighty 20 H Tablet is used for olmighty 20 H Tablet is used in the treatment of high blood pressure.

Medically reviewed by Dr. Balaji Krishnan, MBBS · Updated September 2026

Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)
Available variants: tablet 20mg + 12.5mg 10`S
Best price: ₹78 (₹7.79 per tablet)
MRP: ₹82
Prescription: Required
Manufacturer: MERCK PHARMA

Ordering notes

Standard delivery across India. No same-day delivery nationally.
Chennai express delivery is possible and chargeable. Learn more
Returns & refunds: orders can be cancelled before dispatch; after dispatch, returns depend on the item category. Read the full policy

Composition of Olmighty 20 H Tablet

Olmighty 20 H Tablet contains Olmesartan (20mg) + Hydrochlorothiazide (12.5mg). It belongs to the Angiotensin receptor blocker / ACE inhibitor and Water tablet class of medicines.

Uses of Olmighty 20 H Tablet

Olmighty 20 H Tablet is used in the treatment of high blood pressure.

Key benefits

  • Protects the kidneys in diabetes
  • Reduces the long-term risk of stroke and heart attack
  • Usually taken once a day
  • Relieves swelling and breathlessness caused by fluid
  • Long-established blood pressure treatment
  • Inexpensive and once daily

How Olmighty 20 H Tablet works

Olmighty 20 H Tablet is a combination of two medicines: Hydrochlorothiazide and olmesartan which lower blood pressure effectively. Hydrochlorothiazide is a diuretic that removes extra water and certain electrolytes from the body. Over time it also relaxes blood vessels and improves blood flow. Olmesartan is an angiotensin receptor blocker (ARB). It works by blocking the hormone angiotensin thereby relaxing blood vessels. This allows the blood to flow more smoothly and the heart to pump more efficiently.

How to take Olmighty 20 H Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Olmighty 20 H Tablet may be taken with or without food, but it is better to take it at a fixed time.

Take it exactly as your doctor prescribed. Do not change the dose or stop early on your own.

Missed dose and overdose

If you miss a dose

Take it as soon as you remember. If your next dose is almost due, skip the one you missed — never take two doses together to catch up.

If you take too much

An overdose of this medicine can cause a severe fall in blood pressure, with dizziness, fainting and a fast or slow pulse. It can cause severe dehydration, a sharp fall in blood pressure and dangerous salt imbalances. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Olmighty 20 H Tablet

Most side effects of Olmighty are mild and settle as the body adjusts. Reported side effects include:

  • Nausea Taste change Stomach upset Diarrhea Headache Dizziness Weakness Electrolyte imbalance Glucose intolerance Increased blood lipid level Increased blood uric acid Decreased blood pressure

Stop the medicine and seek help immediately for a rash, swelling of the face or lips, wheezing or difficulty breathing. Tell your doctor about any side effect that persists or worries you.

Safety advice for Olmighty 20 H Tablet

PregnancyOlmighty 20 H Tablet is unsafe to use during pregnancy.<br>There is positive evidence of human fetal risk, but the benefits from use in pregnant women may be acceptable despite the risk, for example in life-threatening situations. Please consult your doctor.
BreastfeedingOlmighty 20 H Tablet is probably safe to use during lactation. Limited human data suggests that the drug does not represent a significant risk to the baby.
AlcoholTaking Olmesartan with alcohol may excessively lower the blood pressure.
DrivingMay cause drowsiness or affect your concentration. Do not drive until you know how it affects you.
KidneyOlmighty 20 H Tablet should be used with caution in patients with severe kidney disease. Dose adjustment of Olmighty 20 H Tablet may be needed. Please consult your doctor.<br>Regular monitoring of blood pressure is advisable for dose adjustment.
LiverOlmighty 20 H Tablet should be used with caution in patients with liver disease. Dose adjustment of Olmighty 20 H Tablet may be needed. Please consult your doctor.
Habit formingNo

Warnings and precautions

Stand up slowly for the first few days — dizziness on rising is common when you start or your dose goes up. Stop and seek urgent care if your lips, tongue, face or throat swell, or you have difficulty breathing. A persistent dry, tickly cough can be caused by the ACE inhibitor group; tell your doctor rather than stopping on your own, as an alternative exists. Your doctor will check your kidney function and potassium after starting and after any dose change. Do not use salt substitutes containing potassium without asking your doctor. Take it in the morning so that passing urine does not disturb your sleep. Your doctor will check your salts and kidney function with blood tests — do not skip them. Report muscle cramps, marked weakness, confusion or an irregular heartbeat; these can be signs your potassium or sodium has fallen. In hot weather or during an illness with vomiting or loose motions, tell your doctor — you may become dehydrated quickly.

Do not take Olmighty if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Must not be used in pregnancy — it can seriously harm the developing baby. Not for people with narrowing of both kidney arteries, or a history of swelling of the face and throat caused by this group of medicines. Not for people who are unable to pass urine, or who are severely dehydrated.

Interactions with other medicines

Anti-inflammatory painkillers reduce the effect and can harm the kidneys when combined. Potassium supplements, potassium-sparing water tablets and salt substitutes can push potassium too high. Lithium levels rise when taken with these medicines. Anti-inflammatory painkillers blunt the effect and can strain the kidneys. Lithium and digoxin levels are affected; tell your doctor if you take either. Potassium-sparing types must not be combined with potassium supplements without supervision.

How to store Olmighty 20 H Tablet

Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.

Expert advice for Olmighty 20 H Tablet

Blood pressure medicines work only while you take them — do not stop because you feel well. Tell your doctor at once if you become pregnant or are planning a pregnancy. Keep a home blood-pressure record if your doctor has asked for one. Weigh yourself at the same time each day if you have heart failure, and report a rapid gain. Do not add extra salt, and ask before using a potassium-based salt substitute.

Manufacturer and class

Manufacturer:
MERCK PHARMA
Therapeutic class:
Anti-hypertensive and Diuretic
Drug class:
Angiotensin receptor blocker / ACE inhibitor and Water tablet

Substitutes for Olmighty 20 H Tablet

Medicines with the same active ingredient (Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Olmighty 20 H Tablet
Olzox -H 20 TabletLLOYD HEALTHCAREtablet · 15`S₹210169% more
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Olmighty 20 H Tablet FAQs

What is Olmighty 20 H Tablet used for?
Olmighty 20 H Tablet is commonly used for Olmighty 20 H Tablet is used in the treatment of high blood pressure. Always follow your doctor's advice, this information is for educational purposes and not a substitute for professional medical guidance.
What is the salt in Olmighty 20 H Tablet?
Olmighty 20 H Tablet contains Olmesartan (20mg) + Hydrochlorothiazide (12.5mg). If you are allergic to any of these active ingredients or excipients, do not take this medicine and speak to your doctor first.
How should I take Olmighty 20 H Tablet?
Take this medicine in the dose and duration as advised by your doctor. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Olmighty 20 H Tablet work?
Olmighty 20 H Tablet is a combination of two medicines: Hydrochlorothiazide and olmesartan which lower blood pressure effectively.
Is Olmighty 20 H Tablet a prescription medicine?
Yes. Olmighty 20 H Tablet is a prescription-only (Rx) medicine. Upload a valid prescription from a registered medical practitioner during checkout. We cannot dispense it without a valid Rx.
What are the common side effects of Olmighty 20 H Tablet?
The side effects reported most often with Olmighty are Nausea Taste change Stomach upset Diarrhea Headache Dizziness Weakness Electrolyte imbalance Glucose intolerance Increased blood lipid level Increased blood uric acid Decreased blood pressure. Most are mild and settle as the body adjusts; tell your doctor if any of them persist or worry you, and stop the medicine and seek help at once for a rash, swelling of the face or lips, or difficulty breathing.
Can Olmighty 20 H Tablet be taken during pregnancy?
Olmighty 20 H Tablet is unsafe to use during pregnancy.<br>There is positive evidence of human fetal risk, but the benefits from use in pregnant women may be acceptable despite the risk, for example in life-threatening... Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Olmighty.
Can I drink alcohol while taking Olmighty 20 H Tablet?
Taking Olmesartan with alcohol may excessively lower the blood pressure.
What if I miss a dose of Olmighty 20 H Tablet?
Take it as soon as you remember.
Is Olmighty 20 H Tablet habit forming?
No. Olmighty 20 H Tablet is not known to be habit forming when taken as prescribed.
How much does Olmighty 20 H Tablet cost on PingMeDoc Pharmacy?
Olmighty 20 H Tablet starts at ₹78 (MRP ₹82) on PingMeDoc Pharmacy. Available in tablet 20mg + 12.5mg 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Olmighty 20 H Tablet?
Olmighty 20 H Tablet is manufactured by MERCK PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Olmighty 20 H Tablet delivered?
Olmighty 20 H Tablet is delivered across India via our licensed pharmacy partners. Standard delivery timelines are confirmed at checkout. Chennai customers can opt for chargeable same-city express delivery.

Olmighty 20 H Tablet, Quick facts

Salt
Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)
Form
tablet
Best price
₹78 (₹7.79 per tablet)
MRP
₹82
Prescription
Required (Rx)
Schedule
Schedule H
Brand
Merck Ltd
Manufacturer
MERCK PHARMA
Therapeutic class
Anti-hypertensive and Diuretic
Drug class
Angiotensin receptor blocker / ACE inhibitor and Water tablet
Habit forming
No
Variants
tablet 20mg + 12.5mg 10`S
Delivery
Standard across India

References

The information on Olmighty 20 H Tablet is compiled from the manufacturer's prescribing information and the sources below, and is reviewed by a registered medical practitioner. It does not replace advice from your own doctor.

  1. PingMeDoc clinical monograph library — compiled from Indian package inserts, the Indian Pharmacopoeia
  2. CDSCO schedules and standard pharmacology references. Reviewed for patient readability. This is general information, not a substitute for your doctor's advice.
  3. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  4. National List of Essential Medicines (NLEM) 2022, Government of India.
  5. Manufacturer's package insert / prescribing information for Olmighty 20 H Tablet.
  6. World Health Organization, ATC/DDD classification and Model Formulary for the active ingredient.

Next steps

Safety disclaimer

Product information is for general awareness and does not replace professional medical advice. Always follow a clinician's guidance and upload a valid prescription when required.