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Omen Act Tablet is a combination of medicines used to treat hypertension (high blood pressure) when a single medication is not effective. It helps to lower high blood pressure thus reduces chances of future heart attack and stroke.

Written By Dr. Anuj Saini, MMST, MBBS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 15 Jan 2026 | 09:39 AM (IST)
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Product introduction

Omen Act Tablet should be taken with or without food. The dose will depend on your condition and how you respond to the medicine. Try to take it at the same time each day. It is important to keep taking this medicine until your doctor tells you not to. It contains a diuretic (water pill) and will make you urinate more so, it is best to avoid taking this medicine within four hours of going to bed. Use this medicine regularly to get the most benefit from it even if you feel well. High blood pressure does not usually have symptoms and if you stop taking it your risk of heart attack or stroke may increase.

The most common side effects of this medicine include ankle swelling, headache, dizziness, tiredness, and taste change. Consult your doctor If any of these bother you, or get worse, or won't go away. Drink plenty of fluids while taking medicine to overcome muscle weakness, dry mouth, and extreme thirst.

Before taking it, let your doctor know if you have any liver or kidney problems. Pregnant or breastfeeding women should also consult their doctor for advice before taking this medicine. You also need to tell your doctor what other medicines you are taking especially those used to treat high blood pressure or heart conditions. You should have your blood pressure, kidney function, level of electrolytes, and blood sugar level checked regularly to make sure that this medicine is working properly.

Uses of Omen Act Tablet

Benefits of Omen Act Tablet

Hypertension (high blood pressure)
Omen Act Tablet relaxes the blood vessels so that blood can flow more easily around your body. It also eliminates excess water from the body and increases urine output. This lowers your blood pressure and reduces your risk of having a stroke, a heart attack, or kidney problems in the future. You do not usually feel any direct benefit from taking this medicine, but it works in the long term to keep you well. You should take it regularly as prescribed for this medicine to be most effective, even if you feel better.

Side effects of Omen Act Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them
Common side effects of Omen Act
  • Ankle swelling
  • Headache
  • Dizziness
  • Tiredness
  • Palpitations
  • Sleepiness
  • Increased blood uric acid
  • Glucose intolerance
  • Taste change
  • Flushing (sense of warmth in the face, ears, neck and trunk)
  • Upset stomach
  • Altered blood lipid level

How to use Omen Act 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. Omen Act Tablet may be taken with or without food.

How Omen Act Tablet works

Omen Act Tablet is a combination of three medicines: Olmesartan Medoxomil, Amlodipine and Chlorthalidone. Olmesartan Medoxomil is an angiotensin receptor blocker (ARB) and Amlodipine is a calcium channel blocker (CCB). They work by widening and relaxing the blood vessels, thereby lowering blood pressure. Chlorthalidone is a diuretic which removes extra water and certain electrolytes from the body through urine. Over time it also works by relaxing blood vessels and improving blood flow.

Quick tips

  • You have been prescribed Omen Act Tablet for the treatment of high blood pressure.
  • Lowering high blood pressure helps prevent strokes and heart attacks.
  • It may cause dizziness. Get up slowly when rising from a sitting or lying position.
  • Omen Act Tablet may cause dehydration. Drink plenty of fluids and inform your doctor if you develop extreme thirst, muscle weakness or very dry mouth.
  • Use of Omen Act Tablet during pregnancy or breastfeeding is unsafe.

Safety advice

Alcohol

Alcohol

UNSAFE
It is unsafe to consume alcohol with Omen Act Tablet
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
Omen Act Tablet is not recommended during pregnancy as there is positive evidence of fetal risk based on animal studies. However, it may still be prescribed by a doctor in situations where the benefits outweigh the risks.
Breast feeding

Breast feeding

CONSULT YOUR DOCTOR
Omen Act Tablet may be unsafe to use during breastfeeding. Limited human data suggests that the drug may pass into the breastmilk and harm the baby. It should be used only if the expected benefit outweighs the potential risk. Please consult your doctor.
Driving

Driving

UNSAFE
Omen Act Tablet may cause side effects that could affect your ability to drive.
Omen Act Tablet may cause side effects such as dizziness, headaches, nausea or tiredness, all of which could affect your ability to concentrate and drive.
Kidney

Kidney

CAUTION
Omen Act Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Liver

Liver

CAUTION
Omen Act Tablet should be used with caution in patients with liver disease. Dose adjustment may be needed.
Use of Omen Act Tablet is not recommended in patients with severe liver disease.

Frequently asked questions

Omen Act Tablet is used to treat high blood pressure (hypertension), helping prevent strokes, heart attacks, kidney problems, and other complications.
People should avoid taking Omen Act Tablet if they are allergic to any ingredient present in it, have severe kidney or liver disease, are pregnant, or breastfeeding.
Although they are rare, serious side effects of Omen Act Tablet may include low blood pressure, kidney problems, electrolyte imbalances, or allergic reactions. Seek immediate medical help if severe symptoms occur.
Yes, regular monitoring helps ensure Omen Act Tablet is working effectively and safely.
You should not stop taking Omen Act Tablet suddenly even if your blood pressure reading comes into the normal range, or you start feeling well. Stopping suddenly can make your blood pressure rise again or worsen. Always consult your doctor before making any changes in your treatment plan.

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CARDIAC

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User feedback

Twice A Day
80%
Once A Day
20%
Hypertension (high blood pressure)
100%
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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Medley Pharmaceuticals
Address: Plot No. D2 Medley House,Street No. 6 M.I.D.C. Area, Andheri (East), Mumbai-400 093, INDIA

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Omen Act Tablet. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India
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