Carbophage G1 Forte
Merck Ltd - 10 S
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Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)
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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
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.
Olmighty 20 H Tablet is used in the treatment of high blood pressure.
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.
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.
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.
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.
Most side effects of Olmighty are mild and settle as the body adjusts. Reported side effects include:
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.
| 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 situations. Please consult your doctor. |
|---|---|
| Breastfeeding | Olmighty 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. |
| Alcohol | Taking Olmesartan with alcohol may excessively lower the blood pressure. |
| Driving | May cause drowsiness or affect your concentration. Do not drive until you know how it affects you. |
| Kidney | Olmighty 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. |
| Liver | Olmighty 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 forming | No |
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.
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.
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.
Store below 30°C in the original pack, away from direct sunlight and moisture. Keep out of the reach of children.
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.
Medicines with the same active ingredient (Olmesartan (20mg) + Hydrochlorothiazide (12.5mg)). Ask your doctor or pharmacist before switching brands.
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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.