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Iten 25mg Tablet

Atenolol (25mg)

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Iten 25mg Tablet belongs to a group of medicines called beta-blockers. It is used to treat high blood pressure (hypertension), angina (heart-related chest pain), and irregular heart rhythms (arrhythmia). It helps prevent cardiovascular complications such as heart attacks and strokes.

Written By Dr. Sakshi Jain, MS, BDS,
Reviewed By Dr. Mekhala Chandra, MD, MBBS,
Last updated on 19 Jan 2026 | 01:15 AM (IST)

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General Information

Contains

Atenolol (25mg)

Marketer

Noel Pharma India Pvt Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Iten 25mg Tablet may be prescribed alone or together with other medications. The dose and frequency depend on what you are taking it for and the severity of your condition. It may be taken empty stomach or with a meal, but take it regularly at the same time each day to get the most benefit. It may take several weeks before you get the full benefit of this medicine and you may need to take it for the rest of your life. However, it is important to continue taking it even if you feel well. Most people with high blood pressure do not feel ill, and if you stop taking it, your condition may worsen.

The main side effects of this medicine are fatigue, slow heart rate, feeling dizzy, diarrhea, and nausea. These are usually mild and short-lived. It may also cause shortness of breath or low blood pressure in some people. To reduce the risk of side effects, your doctor will probably start the medicine at a low dose and gradually increase it. Consult your doctor if the side effects bother you or do not go away.

Before taking it, let your doctor know if you have any liver problems. It may also not be suitable for people who have a slow heart rate, severe circulation problems, severe heart failure, or low blood pressure. Pregnant or breastfeeding mothers should also consult their doctor before taking it. You must talk to your doctor to find out whether this medicine is suitable for you to use. You should have your blood pressure checked regularly to make sure that this medicine is working properly. Avoid drinking alcohol as it may increase certain side effects.

Uses of Iten Tablet

Benefits of Iten Tablet

Treatment of Angina (heart-related chest pain)
Iten 25mg Tablet relaxes the blood vessels so that blood can flow more easily around your body and makes sure that your heart is getting a good supply of oxygen. This makes it less likely that you will suffer chest pain caused by angina. This medicine can help increase your ability to exercise and go about your daily life more easily by reducing the frequency of angina attacks. You should take it regularly and as long as it is prescribed for it to work effectively.

Treatment of Arrhythmia
Iten 25mg Tablet is used to stabilize heart rhythms (particularly atrial fibrillation). It helps in normalizing an abnormal heart rhythm, preventing it occurring in the first place or slowing down the heart rate during an episode.

Treatment of Hypertension (high blood pressure)
Iten 25mg Tablet works by blocking the effects of some chemicals on your heart and blood vessels. It slows down your heart rate and helps the heartbeat with less force. This lowers your blood pressure and helps in reducing your risk of having a stroke, a heart attack, other heart problems, or kidney problems in the future. This medicine needs to be taken regularly to be effective, so keep taking it even if you feel well. Do not stop without talking to your doctor.

Side effects of Iten 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 Iten

Slow heart rate
Cold extremities
Fatigue
Gastrointestinal disturbance

How to use Iten 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. Iten 25mg Tablet may be taken with or without food.

How Iten Tablet works

Iten 25mg Tablet is a beta blocker that works specifically on the heart. It works by slowing down the heart rate and making the heart more efficient at pumping blood throughout the body.

All substitutes for Iten 25mg Tablet

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

It may cause dizziness. If this happens to you, get up slowly when rising from a sitting or lying position.
It can hide symptoms of low blood sugar if you are diabetic. Monitor your blood sugar levels regularly.
Do not stop taking Iten 25mg Tablet suddenly as it can cause your blood pressure to rise suddenly, thereby increasing the risk of heart attack and stroke.

Safety advice

Alcohol

SAFE

Consuming alcohol with Iten 25mg Tablet does not usually cause any harmful side effects.

Pregnancy

UNSAFE

Iten 25mg Tablet is highly unsafe during pregnancy. It can cause serious harm to the unborn baby, including birth defects and pregnancy loss. Do not use this medicine if you are pregnant or planning to become pregnant.

Breast feeding

UNSAFE

Iten 25mg Tablet is unsafe to use during breastfeeding. Data suggests that the drug may cause toxicity to the baby.

Driving

UNSAFE

Iten 25mg Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

Iten 25mg Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.

Liver

SAFE IF PRESCRIBED

Iten 25mg Tablet is safe to use in patients with liver disease. No dose adjustment is recommended.

Interaction with drugs

Taking Iten with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Life-threatening

Aminophylline (Oral Route)

If used together, Atenolol may interrupt the efficacy of Aminophylline.

Life-threatening

Theophylline (Oral Route)

Do not consume Theophylline with Atenolol in case of asthma or COPD (chronic obstructive pulmonary disease). If concurrent use is essential, watch out for breathlessness and dizziness and consult your doctor if you experience them.

Life-threatening

Theophylline (Injection Route)

Life-threatening

Aminophylline (Injection Route)

Do not consume Aminophylline with Atenolol in case of asthma or COPD (chronic obstructive pulmonary disease). If concurrent use is essential, watch out for breathlessness and dizziness and consult your doctor if you experience them.

Severe

Adrenaline (Injection Route)

watch out for symptoms such as breathlessness, fatigue, drowsiness, sedation or faintness or vomiting and consult your doctor if you experience them. Atenolol may reduce efficacy of Adrenaline.

Frequently asked questions

How many hours does Iten 25mg Tablet take to reduce high blood pressure?

Usually, Iten 25mg Tablet starts working within 3 hours, but it can take up to 2 weeks to reach its full effect. You may not feel any difference in blood pressure after taking the medicine, but this does not mean that the medicine is not working. It is important to keep taking your medicine in the prescribed dose and duration to get the maximum benefit of Iten 25mg Tablet.

Should I take Iten 25mg Tablet in the morning or at night?

Iten 25mg Tablet can be taken anytime in the morning or evening, usually prescribed once or twice daily. However, your very first dose of Iten 25mg Tablet may make you feel dizzy, so it is better to take your first dose at bedtime. After that, if you do not feel dizzy, you may take it any time of the day. Follow the advice of your doctor. It is advised to take it at the same time each day so that you remember to take it and consistent levels of medicine are maintained in the body.

What if I take more than the prescribed dose of Iten 25mg Tablet?

If you take more than the prescribed dose, your heart rate may slow down and you may find it difficult to breathe. It can also cause dizziness and trembling. If you experience any of such side effects, seek immediate medical assistance. Avoid driving yourself to avoid any mishap. Get someone else to drive you or call for an ambulance. Take the Iten 25mg Tablet packet or leaflet inside it, plus any remaining medicine, with you.

What are the most common side effects of Iten 25mg Tablet?

The most common side effects of Iten 25mg Tablet include cold extremities (feeling extreme cold), fatigue, slow heart rate, nausea, diarrhea and dizziness. However, these are usually mild and short-lived and not everyone will experience these side effects. But, if these do not resolve and bother you, consult your doctor to know about ways of coping up with them. Your doctor may also suggest ways of preventing them in future.

Can Iten 25mg Tablet cause dizziness? How do I prevent it?

Yes, Iten 25mg Tablet can cause dizziness as a side effect. If this happens to you, you should sit or lie down until the symptoms pass. However, this is temporary and usually goes away as the treatment continues. It would be best to avoid alcohol while being on treatment, as it may worsen the dizziness.

What should I tell my doctor before taking Iten 25mg Tablet?

Iten 25mg Tablet is not suitable for everyone. Therefore, it is advised to inform your doctor if you are allergic to Iten 25mg Tablet or any of its ingredients before starting treatment. You must tell the doctor if you have low blood pressure or a slow heart rate, serious blood circulation problems in your limbs (such as Raynaud's phenomenon), which may make your fingers and toes tingle or turn pale or blue. In addition to that, inform your doctor if you are suffering or have suffered from metabolic acidosis (when there's too much acid in your blood), lung disease, or asthma. Let your doctor know about all the other medicines you are taking because they may affect, or be affected by, this medicine. Also, inform your doctor if you're trying to get pregnant, are already pregnant, or breastfeeding to prevent any harmful effects on the baby.

What other lifestyle changes should I make while taking Iten 25mg Tablet?

Lifestyle changes play a major role in keeping you healthy if you are taking Iten 25mg Tablet. Avoid taking excess salt in your diet and find ways to reduce or manage stress in your life. Practice yoga or meditation, or take up a hobby. Ensure that you have a sound sleep every night, as this also helps to reduce stress levels and helps to keep your blood pressure normal. Stop smoking and alcohol consumption, as this helps in lowering your blood pressure and preventing heart problems. Exercise regularly and take a balanced diet that includes whole grains, fresh fruits, vegetables, and fat-free products. Consult your doctor if you need any further guidance to get the maximum benefit of Iten 25mg Tablet and to keep yourself healthy.

Can Iten 25mg Tablet cause dizziness? How do I prevent it?

Fact Box

Chemical Class

Phenylacetamides

Habit Forming

Therapeutic Class

CARDIAC

Action Class

Beta blocker- Cardioselective

Related lab tests

Kidney Function Test

References

Westfall TC, Westfall DP. Adrenergic Agonists and Antagonists. In: Brunton LL, Chabner BA, Knollmann BC, editors. Goodman & Gilman’s: The Pharmacological Basis of Therapeutics. 12th ed. New York, New York: McGraw-Hill Medical; 2011. p. 327.
Benowitz NL. Antihypertensive Agents. In: Katzung BG, Masters SB, Trevor AJ, editors. Basic and Clinical Pharmacology. 11th ed. New Delhi, India: Tata McGraw Hill Education Private Limited; 2009. p. 176.
Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 98-102.
Central Drugs Standard Control Organisation (CDSCO). Atenolol. [Accessed 14 Mar. 2019] (online) Available from:
Atenolol [Drug Label]. Wilmington, DE: AstraZeneca Pharmaceuticals LP; 2011. [Accessed 25 Jul. 2024] (online) Available from:
Atenolol [Product Monograph]. Toronto, Ontario: Teva Canada Limited; 2024.

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Hypertension (high blood pressure)

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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: Noel Pharma India Pvt Ltd
Address: Khasra No. 66/3, & 67/2, Juddi Kalan, Baddi-173205, Distt. Solan (H.P.)

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Iten 25mg 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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Why we need a prescription?

Provide right medicines

Prescriptions are complex documents. We proof read and recheck at various steps to provide you the right medication in the correct form and dose

In accordance with the law

Most medicines cannot be sold without a valid prescription, as per the Drugs and Cosmetics Act, 1940 and Rules, 1945

Iten 25mg Tablet

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General Information

Contains

Marketer

Storage

Product introduction

Uses of Iten Tablet

Benefits of Iten Tablet

Side effects of Iten Tablet

How to use Iten Tablet

How Iten Tablet works

All substitutes for Iten 25mg Tablet

HiPRES 25 Tablet

Aten 25 Tablet

Tenolol 25 Tablet

Tenormin 25 Tablet

Betacard 25 Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Aminophylline (Oral Route)

Theophylline (Oral Route)

Theophylline (Injection Route)

Aminophylline (Injection Route)

Adrenaline (Injection Route)

Frequently asked questions

How many hours does Iten 25mg Tablet take to reduce high blood pressure?

Should I take Iten 25mg Tablet in the morning or at night?

What if I take more than the prescribed dose of Iten 25mg Tablet?

What are the most common side effects of Iten 25mg Tablet?

Can Iten 25mg Tablet cause dizziness? How do I prevent it?

What should I tell my doctor before taking Iten 25mg Tablet?

What other lifestyle changes should I make while taking Iten 25mg Tablet?

Can Iten 25mg Tablet cause dizziness? How do I prevent it?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Kidney Function Test

References

User feedback

What are you using Iten Tablet for?

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

In case of any issues, contact us

Lab tests offered by us

Related/Popular tests