By Medically reviewed by Hello Doktor Medical Panel


What is Tozaar® (iosartan potassium) used for?

Tozaar® is commonly used for the treatment, control, prevention, and improvement of the following conditions, such as:

  • High blood pressure
  • Kidney disease in high blood pressure patients
  • Kidney disease in type 2 diabetes mellitus patients
  • Chronic heart failure
  • Stroke in heart disorder patients
  • Stroke in high blood pressure patients

How should I take Tozaar® (iosartan potassium)?

Tozaar® can be taken with food or without food. It takes about a month before your blood pressure is under control. Do not discontinue without consulting your doctor.

How do I store Tozaar® (iosartan potassium)?

Tozaar® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Tozaar® in the bathroom or the freezer. There may be different brands of Tozaar® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Tozaar® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Tozaar® (iosartan potassium)?

While using this drug, you should notice that:

  • Avoid sudden position changes.
  • Cessation should be done gradually over 7-14 days along with patient monitoring.
  • Do not drive or operate heavy machinery.
  • Do not stop taking atenolol abruptly.
  • Do not take double dose to compensate for a forgotten dose.
  • You should not use Tozaar® if you are allergic to it.

Is it safe during pregnancy or breastfeeding?

There are no adequate studies in women for determining risk when using Tozaar® during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Tozaar®. Tozaar® is pregnancy risk category D, according to the US Food and Drug Administration (FDA).

FDA pregnancy risk category reference below:

  • A=No risk
  • B=No risk in some studies
  • C=There may be some risk
  • D=Positive evidence of risk
  • X=Contraindicated
  • N=Unknown

Side effects

What side effects can occur from Tozaar® (iosartan potassium)?

These side effects are possible, but do not always occur. Some of the side effects may be rare but serious. Consult your doctor if you observe any of the following side effects, especially if they do not go away.

  • Cold hands or feet
  • Slowing of heart rate
  • Disturbed sleep
  • Hypersensitivity reactions
  • Loose motion
  • Pain in muscles
  • Dizziness
  • Fatigue
  • Cough
  • Throat irritation


What drugs may interact with Tozaar® (iosartan potassium)?

Tozaar® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Products may interact with this drug, such as:

  • Amturnide
  • Tekturna
  • Tekamlo
  • Valturn

Does food or alcohol interact with Tozaar® (iosartan potassium)?

Tozaar® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Tozaar® (iosartan potassium)?

Tozaar® may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.

To make sure Tozaar® is safe for you, tell your doctor if you have:

  • Kidney disease
  • Liver disease
  • Congestive heart failure
  • An electrolyte imbalance (such as low levels of potassium in your blood)
  • Dehydrated


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Tozaar® (iosartan potassium).

What is the dose of Tozaar® (iosartan potassium) for an adult?

Diabetic nephropathy:

The initial dose is 50 mg orally once a day.

The maintenance dose is 25 to 100 mg orally in 1 to 2 divided doses.


The initial dose is 50 mg orally once a day.

The maintenance dose is 25 to 100 mg orally in 1 to 2 divided doses.

What is the dose of Tozaar® (iosartan potassium) for a child?

The dosage has not been established in pediatric patients. It may be unsafe for your child. It is always important to fully understand the safety of the drug before using. Please consult with your doctor or pharmacist for more information.

How is Tozaar® (iosartan potassium) available?

Tozaar® is available in the following dosage forms and strengths:

  • Tozaar® 50mg tablet

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Tozaar®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

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Review Date: February 18, 2017 | Last Modified: December 19, 2019

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