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Cilacar OC Tablet is a combination of medicines used to treat hypertension (high blood pressure) when a single medication is not effective. It helps lower high blood pressure, thus reducing the chances of future heart attack and stroke.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Mekhala Chandra, MD, MBBS,
Last updated on 15 Jan 2026 | 10:46 AM (IST)
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Cilacar OC Tablet
Cilacar OC Tablet
strip of 10 tablets
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Same composition
Olvan Trio 20 Tablet
Olvan Trio 20 Tablet
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Cilacar OC Tablet image
Cilacar OC Tablet image

Product introduction

Cilacar OC Tablet should be taken with 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, vertigo, tiredness, and altered taste. Consult your doctor if any of these bother you, or get worse, or won't go away. Drink plenty of fluids while taking this 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 Cilacar OC Tablet

Benefits of Cilacar OC Tablet

Hypertension (high blood pressure)
Cilacar OC 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 Cilacar OC 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 Cilacar OC
  • Ankle swelling
  • Headache
  • Dizziness
  • Tiredness
  • Palpitations
  • Sleepiness
  • Glucose intolerance
  • Taste change
  • Flushing (sense of warmth in the face, ears, neck and trunk)
  • Upset stomach
  • Altered blood lipid level
  • Vertigo
  • Increased uric acid level in blood

How to use Cilacar OC 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. Cilacar OC Tablet should be taken with or after food.

How Cilacar OC Tablet works

Cilacar OC Tablet is a combination of three medicines: olmesartan medoxomil, cilnidipine, and chlorthalidone. Olmesartan medoxomil is an angiotensin receptor blocker (ARB), and cilnidipine is a calcium channel blocker (CCB). They work by widening and relaxing the blood vessels, thereby lowering blood pressure. Chlorthalidone is a diuretic that 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

  • 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.
  • Cilacar OC Tablet may cause dehydration. Drink plenty of fluids and inform your doctor if you develop extreme thirst, muscle weakness, or a very dry mouth.
  • Inform your doctor if you are pregnant or breastfeeding.

Safety advice

Alcohol

Alcohol

UNSAFE
Do not drink alcohol while you are taking this medicine. Cilacar OC Tablet may cause excessive drowsiness when taken with alcohol.
Pregnancy

Pregnancy

CONSULT YOUR DOCTOR
Cilacar OC 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
Cilacar OC 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
Cilacar OC Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.
Kidney

Kidney

CAUTION
Cilacar OC Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.
Use of Cilacar OC Tablet is not recommended in these patients.
Liver

Liver

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

Frequently asked questions

Cilacar OC Tablet is used to treat high blood pressure (hypertension). It helps relax blood vessels, reduce extra water in the body, and improve blood flow. All this together helps lower blood pressure effectively.
You should avoid taking Cilacar OC Tablet if you are pregnant or planning pregnancy, have severe kidney or liver disease, had a recent heart attack or suffer from serious heart failure, have a condition where you stop producing urine (anuria), have low levels of potassium or sodium, or high calcium or uric acid (like in gout) and/or are allergic to any ingredient in the Cilacar OC Tablet.
Some people may experience dizziness, swelling in the legs, tiredness, or increased urination. If any side effects bother you or worsen, consult your doctor.
You should stop using Cilacar OC Tablet and seek medical help if you notice serious side effects such as severe dizziness or fainting, muscle cramps or irregular heartbeat (can be due to low potassium), yellowing of eyes or skin (signs of liver trouble), sudden weight gain or swelling (signs of kidney issues), skin rash, itching, or trouble breathing (possible allergic reaction), etc.
No. You should never stop taking Cilacar OC Tablet without consulting your doctor. High blood pressure often has no symptoms, and stopping the medicine suddenly may cause complications.
Taking Cilacar OC Tablet in severe liver or kidney issues may cause harm. If you have kidney or liver issues, talk to your doctor before taking Cilacar OC Tablet. Your doctor may adjust the dose or suggest alternative medicine based on your condition.
Yes, one ingredient in Cilacar OC Tablet, chlorthalidone, is a water pill (diuretic), which increases urine output. You may urinate more often, especially after the first few doses.
Yes, Cilacar OC Tablet may increase blood sugar, uric acid, or cholesterol levels. If you have diabetes or gout, your doctor will monitor you more closely.
Yes, Cilacar OC Tablet may cause dizziness, especially when standing up too quickly. It’s best to stand slowly and avoid driving or using machines until you know how the medicine affects you.
The exact time Cilacar OC Tablet takes to show results is not known. However, you may expect a control in your blood pressure in a few days of regular prescribed use. The full benefits may take a bit longer depending on the severity of your condition.
While on Cilacar OC Tablet treatment, you should avoid taking salt substitutes high in potassium, grapefruit juice (it may increase side effects), and other blood pressure medicines or diuretics without your doctor’s advice. Also tell your doctor if you take medicines for heart problems, diabetes, gout, or anti-inflammatory drugs like ibuprofen.

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User feedback

Once A Day
97%
Twice A Day
3%
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: J B Chemicals and Pharmaceuticals Ltd
Address: Cnergy IT Park, 3rd floor Appa Saheb Marathe Marg, Prabhadevi, Mumbai 400025

Vendor Details

Country of origin: India
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