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Prescription requiredZydus Healthcare PharmaAntihypertensive, Antianginal

Aten 100

Atenolol (100mg)

Aten 100 is used for treatment of hypertension (high blood pressure); prevention/management of angina (chest pain) due to coronary artery disease; rate control in certain tachyarrhythmias (as prescribed).

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

₹76
Licensed pharmacyPharmacist-verified orderDelivered across India

Key details

Salt: Atenolol (100mg)
Available variants: NA 14`S
Best price: ₹76
Prescription: Required
Manufacturer: ZYDUS HEALTHCARE PHARMA

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 Aten 100

Aten 100 contains Atenolol (100mg). It belongs to the Beta-blocker (beta-1 selective) class of medicines.

Uses of Aten 100

Treatment of hypertension (high blood pressure); prevention/management of angina (chest pain) due to coronary artery disease; rate control in certain tachyarrhythmias (as prescribed).

Key benefits

  • Lowers high blood pressure
  • Reduces risk of angina attacks
  • Helps control fast heart rate
  • Decreases cardiac workload and oxygen demand

How Aten 100 works

Atenolol is a cardioselective beta-1 blocker. It reduces heart rate and the force of contraction, lowering cardiac output and blood pressure, and decreases the heart’s oxygen demand to relieve angina.

How to take Aten 100

Tablet for oral use. Take exactly as prescribed, usually once daily, with or without food, at the same time each day. Do not stop abruptly; dose should be tapered under medical advice.

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 Aten 100 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 dangerously slow heartbeat, a severe fall in blood pressure, wheezing and fits. Do not wait for symptoms to appear — go to the nearest emergency department and take the pack or strip with you.

Side effects of Aten 100

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

  • Bradycardia (slow pulse)
  • fatigue
  • dizziness
  • cold hands/feet
  • low blood pressure
  • nausea
  • headache
  • sleep disturbances

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 Aten 100

PregnancyUse with caution / Consult doctor (may affect fetal growth; use only if clearly needed).
BreastfeedingBreast feeding UNSAFE
AlcoholUse with caution (may increase dizziness and blood pressure lowering).
DrivingDriving UNSAFE
KidneyKidney CAUTION
LiverLiver SAFE IF PRESCRIBED
Habit formingNo

Warnings and precautions

Do not stop suddenly (risk of rebound angina/MI). Use with caution in asthma/COPD (may cause bronchospasm), diabetes (may mask hypoglycaemia symptoms), peripheral vascular disease, psoriasis, myasthenia gravis, and in the elderly. Contraindicated/avoid in severe bradycardia, second/third-degree heart block, cardiogenic shock, uncontrolled heart failure unless stabilized. Monitor blood pressure and pulse; caution while driving if dizzy.

Do not take Aten if

Not for anyone with a known allergy to this medicine or to any ingredient in the pack. Not for people with a very slow heart rate, certain heart block disorders, or uncontrolled heart failure. Generally avoided in severe asthma.

Interactions with other medicines

Verapamil,diltiazem,amiodarone,digoxin,clonidine (withdrawal issues),other antihypertensives/diuretics (additive hypotension),NSAIDs (may reduce BP-lowering effect),insulin/oral antidiabetics (masked hypoglycaemia),beta-agonist bronchodilators (reduced effect),MAO inhibitors (non-selective),anaesthetic agents

How to store Aten 100

Store below 25°C in a cool, dry place. Protect from moisture and direct light. Keep out of reach of children.

Expert advice for Aten 100

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 Aten 100 Tablet suddenly as it can cause your blood pressure to rise suddenly, thereby increasing the risk of heart attack and stroke.

Manufacturer and class

Manufacturer:
ZYDUS HEALTHCARE PHARMA
Therapeutic class:
Antihypertensive, Antianginal
Drug class:
Beta-blocker (beta-1 selective)
Chemical class:
Phenylacetamides

Substitutes for Aten 100

Medicines with the same active ingredient (Atenolol (100mg)). Ask your doctor or pharmacist before switching brands.

MedicinePackPricevs Aten 100
Tenolol 100 mg TabletIPCA LABORATORIES LTD`tablet · 14`S₹6217% cheaper
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Aten 100 FAQs

What is Aten 100 used for?
Aten 100 is commonly used for Treatment of hypertension (high blood pressure); prevention/management of angina (chest pain) due to coronary artery disease; rate control in certain tachyarrhythmias (as prescribed). 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 Aten 100?
Aten 100 contains Atenolol (100mg). 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 Aten 100?
Tablet for oral use. Take it exactly as prescribed; do not change the dose or stop early without talking to your doctor.
How does Aten 100 work?
Atenolol is a cardioselective beta-1 blocker.
Is Aten 100 a prescription medicine?
Yes. Aten 100 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 Aten 100?
The side effects reported most often with Aten are Bradycardia (slow pulse), fatigue, dizziness, cold hands/feet, low blood pressure. 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 Aten 100 be taken during pregnancy?
Use with caution / Consult doctor (may affect fetal growth; use only if clearly needed). Always tell your doctor if you are pregnant, planning a pregnancy or breastfeeding before starting Aten.
Can I drink alcohol while taking Aten 100?
Use with caution (may increase dizziness and blood pressure lowering).
What if I miss a dose of Aten 100?
If you miss a dose of Aten 100 Tablet, take it as soon as possible.
Is Aten 100 habit forming?
No. Aten 100 is not known to be habit forming when taken as prescribed.
Is there a cheaper substitute for Aten 100?
Tenolol 100 mg Tablet has the same active ingredient and strength and is listed from ₹62 on PingMeDoc Pharmacy. Ask your doctor or pharmacist before switching brands, the salt is the same, but excipients and release profiles can differ.
How much does Aten 100 cost on PingMeDoc Pharmacy?
Aten 100 starts at ₹76 on PingMeDoc Pharmacy. Available in NA 14`S. Final price is confirmed at checkout and may vary by variant and location.
Who manufactures Aten 100?
Aten 100 is manufactured by ZYDUS HEALTHCARE PHARMA. PingMeDoc Pharmacy sources medicines only from licensed manufacturers and distributors.
How is Aten 100 delivered?
Aten 100 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.

Aten 100, Quick facts

Salt
Atenolol (100mg)
Best price
₹76
Prescription
Required (Rx)
Schedule
Schedule H
Brand
ZYDUS HEALTHCARE PHARMA
Manufacturer
ZYDUS HEALTHCARE PHARMA
Therapeutic class
Antihypertensive, Antianginal
Drug class
Beta-blocker (beta-1 selective)
Chemical class
Phenylacetamides
Action class
Beta blocker- Cardioselective
Habit forming
No
Variants
NA 14`S
Delivery
Standard across India

References

The information on Aten 100 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. Manufacturer labeling
  2. Indian Pharmacopoeia
  3. CDSCO drug information, established medical literature (beta-blockers/atenolol monographs)
  4. Central Drugs Standard Control Organisation (CDSCO), Ministry of Health & Family Welfare, Government of India, approved drug and schedule listings.
  5. National List of Essential Medicines (NLEM) 2022, Government of India.
  6. Manufacturer's package insert / prescribing information for Aten 100.
  7. 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.