Olmesartan/Hydrochlorothiazide 20 mg/25 mg Overview

What is olmesartan/hydrochlorothiazide 20 mg/25 mg?

Olmesartan/hydrochlorothiazide 20 mg/25 mg film-coated tablets are a combination medicine used to manage high blood pressure. It contains olmesartan, an angiotensin II receptor antagonist, and hydrochlorothiazide, a thiazide diuretic.

The film-coated tablet form is designed to be easier to swallow. This combination is generally used when blood pressure is not adequately controlled with a single medicine.

How does it work?

The two ingredients work in different ways:

• Olmesartan helps relax blood vessels by blocking the action of angiotensin II.
• Hydrochlorothiazide helps the body remove extra salt and water through urine.

Together, these effects can help lower blood pressure more effectively than either ingredient alone in some patients.

Common side effects

Like all medicines, this combination can cause side effects. The original content highlights the following:

• Dizziness or lightheadedness, especially when standing up quickly
• Fatigue or weakness
• Increased urination
• Possible kidney-related problems, which may show up as changes in urination

If side effects are severe, persistent, or worrying, a healthcare professional should assess them.

Precautions and warnings

Several precautions are commonly noted for this medicine:

• Blood pressure and kidney function may need regular monitoring.
• Tell a healthcare professional about any history of allergies, including reactions to sulfa-related medicines.
• Staying hydrated is important, especially in hot weather or during exercise.
• Pregnancy should be discussed with a clinician, as this medicine may pose risks to the fetus.

People with a history of angioedema or allergic reactions to ACE inhibitors or ARBs should also discuss this carefully with a clinician.

Drug interactions to check

This medicine may interact with other treatments. The original content specifically mentions:

• NSAIDs, which may reduce the blood-pressure-lowering effect
• Other antihypertensives, which may increase the risk of low blood pressure
• Medicines that affect kidney function, which may increase the risk of electrolyte imbalance

It is important to share a full medication list, including over-the-counter products and supplements, with a pharmacist or doctor.

Who may need extra caution?

The original content identifies these groups as needing special caution or avoidance:

• Pregnant women, especially in the second and third trimesters
• People with severe renal impairment or those on dialysis
• People with a history of angioedema or allergy to ACE inhibitors or ARBs

For these situations, a clinician can help assess whether another treatment is more appropriate.

What to verify on the pack or leaflet

If you are reviewing this medicine, it is sensible to confirm the following in the official leaflet or with a pharmacist:

• The exact strength and tablet appearance
• How the medicine should be taken
• Which side effects require urgent attention
• Whether any of your current medicines or supplements may interact

Related questions

What is olmesartan medoxomil 20 mg film-coated tablets?

Olmesartan medoxomil 20 mg film-coated tablets contain olmesartan, which is used to help treat high blood pressure by blocking angiotensin II.

What do olmesartan tablets look like?

Tablet appearance can vary by manufacturer and country. The original content describes them as light yellow and oval-shaped, but it is best to check the pack and leaflet for the exact product you have.

Does olmesartan cause weight gain?

Weight gain is not described in the original content as a common direct effect of olmesartan. If weight changes occur, they should be discussed with a healthcare professional.

What vitamins should not be taken with olmesartan?

No specific vitamins are identified in the original content. However, potassium supplements and potassium-containing salt substitutes should be checked with a clinician or pharmacist because blood potassium levels may be affected.

Safety reminder

Do not start, stop, or change this medicine without medical advice. If you have symptoms that feel severe, unusual, or rapidly worsening, seek prompt professional help.

Frequently asked questions