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Prescription requiredAlkem LabCARDIAC

Olkem 20 Ct

Olmesartan Medoxomil (20mg) + Chlorthalidone (12.5mg)

Olkem 20 Ct is used for hypertension (high blood pressure).

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

₹195
Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Olmesartan Medoxomil (20mg) + Chlorthalidone (12.5mg)
Available variants: NA 10`S
Best price: ₹195
Prescription: Required
Manufacturer: ALKEM LAB

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 Olkem 20 Ct

Olkem 20 Ct contains Olmesartan Medoxomil (20mg) + Chlorthalidone (12.5mg). It belongs to the Angiotensin receptor blocker / ACE inhibitor and Water tablet class of medicines.

Uses of Olkem 20 Ct

Hypertension (high blood pressure)

Key benefits

  • In Hypertension (high blood pressure) Olkem 20 CT Tablet is a combination of two medicines namely Olmesartan and chlorthalidone. It is generally used when one medicine alone is not controlling your blood pressure effectively. Olmesartan works by relaxing and widening your blood vessels so your blood can flow more easily. This will lower your blood pressure. Chlorthalidone is known as a diuretic (water pill) which increases urine output thereby lowering blood pressure. If your blood pressure is controlled you are less at risk of having a heart attack
  • stroke
  • or kidney problems. The medicine must be taken regularly as prescribed to be effective. You do not usually feel any direct benefit from taking this medicine
  • but it works in the long term to keep you well.

How Olkem 20 Ct works

Olkem 20 CT Tablet is a combination of olmesartan medoxomil and chlorthalidone. Olmesartan medoxomil works by blocking the action of angiotensin II, a substance that causes blood vessels to narrow, thereby relaxing and widening the blood vessels to lower blood pressure. Chlorthalidone is a diuretic that helps remove excess salt and water from the body through urine, reducing fluid volume and easing the workload on the heart. Together, they help lower and control blood pressure effectively.

How to take Olkem 20 Ct

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. Olkem 20 CT Tablet may be taken with or without food.

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

If you miss a dose of Olkem 20 CT Tablet, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose.

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 Olkem 20 Ct

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

  • 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

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 Olkem 20 Ct

PregnancyPregnancy UNSAFE
BreastfeedingBreast feeding UNSAFE
AlcoholAlcohol CAUTION
DrivingDriving CONSULT YOUR DOCTOR
KidneyKidney CAUTION
LiverLiver UNSAFE
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 Olkem 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 Olkem 20 Ct

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

Expert advice for Olkem 20 Ct

You have been prescribed Olkem 20 CT Tablet for the treatment of high blood pressure. It can be taken with or without food. Olkem 20 CT Tablet may cause dehydration. Drink plenty of fluids and inform your doctor if you develop extreme thirst, very dry mouth or muscle weakness. It may cause dizziness. Get up slowly when rising from a sitting or lying position. Use of Olkem 20 CT Tablet during pregnancy or breastfeeding is unsafe. It may also decrease the risk of stroke and heart attacks.

Manufacturer and class

Manufacturer:
ALKEM LAB
Therapeutic class:
CARDIAC
Drug class:
Angiotensin receptor blocker / ACE inhibitor and Water tablet

Substitutes for Olkem 20 Ct

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

MedicinePackPricevs Olkem 20 Ct
Olmat 20 Ct TabletMICRO LABStablet · 15`S₹2087% more
Olmin 20-Ch TabletERIS LIFE SCIENCES PVT LTDtablet · 15`S₹27843% more
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Olkem 20 Ct FAQs

What is Olkem 20 Ct used for?
Olkem 20 Ct is commonly used for Hypertension (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 Olkem 20 Ct?
Olkem 20 Ct contains Olmesartan Medoxomil (20mg) + Chlorthalidone (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 Olkem 20 Ct?
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 Olkem 20 Ct work?
Olkem 20 CT Tablet is a combination of olmesartan medoxomil and chlorthalidone.
Is Olkem 20 Ct a prescription medicine?
Yes. Olkem 20 Ct 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 Olkem 20 Ct?
The side effects reported most often with Olkem are 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. 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 Olkem 20 Ct be taken during pregnancy?
Pregnancy UNSAFE Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Olkem.
Can I drink alcohol while taking Olkem 20 Ct?
Alcohol CAUTION
What if I miss a dose of Olkem 20 Ct?
If you miss a dose of Olkem 20 CT Tablet, take it as soon as possible.
Is Olkem 20 Ct habit forming?
No. Olkem 20 Ct is not known to be habit forming when taken as prescribed.
How much does Olkem 20 Ct cost on PingMeDoc Pharmacy?
Olkem 20 Ct starts at ₹195 on PingMeDoc Pharmacy. Available in NA 10`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Olkem 20 Ct?
Olkem 20 Ct is manufactured by ALKEM LAB. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Olkem 20 Ct delivered?
Olkem 20 Ct 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.

Olkem 20 Ct, Quick facts

Salt
Olmesartan Medoxomil (20mg) + Chlorthalidone (12.5mg)
Best price
₹195
Prescription
Required (Rx)
Schedule
Schedule H
Brand
ALKEM LAB
Manufacturer
ALKEM LAB
Therapeutic class
CARDIAC
Drug class
Angiotensin receptor blocker / ACE inhibitor and Water tablet
Habit forming
No
Variants
NA 10`S
Delivery
Standard across India

References

The information on Olkem 20 Ct 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 Olkem 20 Ct.
  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.