1. Why am I taking NOTEN?

NOTEN contains the active ingredient atenolol. NOTEN is used to lower high blood pressure, which is called hypertension, prevent angina, treat irregular heart rhythm or beat called arrhythmias and treat heart attacks, or reduce your risk of heart complications following a heart attack.

For more information, see Section 1. Why am I taking NOTEN? in the full CMI.

2. What should I know before I take NOTEN?

Do not use if you have ever had an allergic reaction to NOTEN or any of the ingredients listed at the end of the CMI.

Talk to your doctor if you have any other medical conditions, take any other medicines, or are pregnant or plan to become pregnant or are breastfeeding.

For more information, see Section 2. What should I know before I take NOTEN? in the full CMI.

3. What if I am taking other medicines?

Some medicines may interfere with NOTEN and affect how it works.

A list of these medicines is in Section 3. What if I am taking other medicines? in the full CMI.

4. How do I take NOTEN?

Follow all directions given to you by your doctor or pharmacist carefully. The dose your doctor prescribes you will depend on the condition you are being treated for.

More instructions can be found in Section 4. How do I take NOTEN? in the full CMI.

5. What should I know while taking NOTEN?

For more information, see Section 5. What should I know while taking NOTEN? in the full CMI.

6. Are there any side effects?

Common side effects include stomach upsets such as diarrhea, constipation, abdominal pain or heartburn, dry mouth, change in taste sensation, dizziness, headache or buzzing or ringing in the ears, slow or irregular heartbeat, dry eyes, problems with vision, runny or blocked nose, difficulty sleeping, nightmares, skin reactions, cold fingers and toes, increased hair loss, tingling 'pins and needles' or walking unsteadily or sexual problems. Serious side effects include confusion or disorientation, depression or mood changes or a worsening of these, unusual thoughts, hallucinations, light-headedness or fainting which may be due to low blood pressure or yellowing of the skin and/or eyes. Very serious side effects include allergic reaction.

For more information, including what to do if you have any side effects, see Section 6. Are there any side effects? in the full CMI.

NOTEN®

Active ingredient(s): atenolol

Consumer Medicine Information (CMI)

This leaflet provides important information about using NOTEN. You should also speak to your doctor or pharmacist if you would like further information or if you have any concerns or questions about using NOTEN.

Where to find information in this leaflet:

1. Why am I taking NOTEN?

NOTEN contains the active ingredient atenolol. NOTEN is belongs to a group of medicines called beta-blockers.

It works by affecting the body's response to certain nerve impulses, especially in the heart. As a result, it decreases the heart's need for blood and oxygen and therefore reduces the amount of work the heart has to do. It widens the blood vessels in the body, causing blood pressure to fall. It also helps the heart to beat more regularly.

NOTEN is used to:

• lower high blood pressure, which is called hypertension
• prevent angina
• treat irregular heart rhythm or beat called arrhythmias
• treat heart attacks, or reduce your risk of heart complications following a heart attack

2. What should I know before I take NOTEN?

Warnings

Do not use NOTEN if:

• you are allergic to atenolol, or any of the ingredients listed at the end of this leaflet.
• any of the ingredients listed at the end of this leaflet.
• any other beta-blocker medicines.

Always check the ingredients to make sure you can use this medicine

• you have or have had asthma (difficulty in breathing, wheezing and coughing), bronchitis or other lung problems in the past.
• a history of allergic problems, including hay fever. Symptoms of an allergy may include rash, itching, watery eyes or sneezing.
• a very slow heartbeat, less than 45 to 50 beats per minute
• a severe blood vessel disorder causing poor circulation in the arms and legs
• certain other heart conditions, such as heart failure
• phaeochromocytoma (a rare tumour of the adrenal gland) that is not being treated with other medicines
• low blood pressure, also called hypotension
• too much acid in your blood (metabolic acidosis)
• you are receiving certain anaesthetics for medical or dental procedures
• you are receiving emergency treatment for shock or very low blood pressure

Check with your doctor if you:

• have any other medical conditions. These include heart problems, diabetes, an overactive thyroid gland (called hyperthyroidism), kidney problems and any blood vessel disorders causing poor blood circulation in the arms and legs
• take any medicines for any other condition
• you have allergies to any other medicines (including eye drops), foods, preservatives, dyes or insect stings

NOTEN may make allergies worse or make them harder to treat.

During treatment, you may be at risk of developing certain side effects. It is important you understand these risks and how to monitor for them. See additional information under Section 6. Are there any side effects?

Pregnancy and breastfeeding

Do not take NOTEN if you are pregnant or intend to become pregnant, are breastfeeding or intend to breastfeed.

Your doctor will discuss the possible risks and benefits of using NOTEN during pregnancy and breast feeding. NOTEN passes into breast milk and may therefore affect the breast-fed baby.

3. What if I am taking other medicines?

Tell your doctor or pharmacist if you are taking any other medicines, including any medicines, vitamins or supplements that you buy without a prescription from your pharmacy, supermarket or health food shop.

Some medicines may interfere with NOTEN and affect how it works.

• other beta-blocker medicines
• medicines used to treat high blood pressure, angina or an irregular heartbeat, such as verapamil or clonidine
• medicines used to treat other heart problems
• insulin and other medicines used to treat diabetes such as drugs called sulfonylureas (e.g., gliquidone, gliclazide, glibenclamide, glipizide, glimepiride or tolbutamide)
• medicines used to treat arthritis, pain or inflammation such as indometacin or ibuprofen
• medicines commonly used during surgery or in emergency situations such as adrenaline (epinephrine), noradrenaline (norepinephrine) and certain anaesthetics

Check with your doctor or pharmacist if you are not sure about what medicines, vitamins or supplements you are taking and if these affect NOTEN.

4. How do I take NOTEN?

How much to take

Follow all directions given to you by your doctor or pharmacist carefully. The dose your doctor prescribes you will depend on the condition you are being treated for.

Hypertension

• The usual dose is from 50 mg (1 tablet) up to 200 mg (4 tablets) daily.
• If your dose is 100 mg or less, you may take it once a day.
• If you need to take more than 100 mg (2 tablets), take half of your dose in the morning and the other half at night.

Angina or arrhythmia (irregular heartbeat)

• The usual dose is from 50 mg daily (1 tablet) as a single dose up to 100 mg (2 tablets) either as a single dose or a divided dose given as 1 tablet in the morning and 1 tablet at night.

Heart attack

• The usual dose is 50 mg (1 tablet) daily. Certain people such as the elderly or those with kidney problems may require a lower dose.

When to take NOTEN

• NOTEN should be used at the same time everyday
• It does not matter if you take NOTEN before or after food.
• Continue taking your medicine for as long as your doctor tells you to

How to take NOTEN

• Swallow NOTEN whole with a glass of water

How long to take NOTEN

• NOTEN helps treat your condition but does not cure it. Continue taking NOTEN, every day, until your doctor advises you to stop.
• Make sure you keep enough NOTEN to last over weekends and holidays.

Your doctor may want you to gradually reduce the amount of NOTEN you are taking. This should take place over a period of about 2 weeks before stopping completely.

Do not stop taking NOTEN suddenly, or adjust the dose, without checking with your doctor. This may worsen your condition.

If you forget to take NOTEN

NOTEN should be used regularly at the same time each day.

If it is less than six hours from when you missed your dose, take it as soon as you remember, and then go back to taking your tablets at the same time you would normally.

If it is more than six hours since your last dose, skip the dose you missed and take your next dose when you would normally.

Do not take a double dose to make up for the dose you missed.

If you are not sure what to do, ask your doctor or pharmacist.

If you take too much NOTEN

If you think that you have used too much NOTEN, you may need urgent medical attention.

You should immediately:

• phone the Poisons Information Centre
  (Australia telephone 13 11 26) for advice, or
• contact your doctor, or
• go to the Emergency Department at your nearest hospital.

You should do this even if there are no signs of discomfort or poisoning.

5. What should I know while taking NOTEN?

Things you should do

Keep all of your doctor's appointments so that your progress can be checked

If you are about to be started on any new medicine, tell your doctor and pharmacist that you are taking NOTEN.

Tell any other doctors, dentists and pharmacists who treat you that you are taking this medicine.

Make sure you drink enough water in hot weather and during exercise while you are taking NOTEN, especially if you sweat a lot

Call your doctor straight away if you:

• become pregnant while taking this medicine
• have an allergic reaction to any foods, medicines or insect stings
• going to have surgery, tell your surgeon or dentist that you are taking this medicine
• have diabetes and notice any blood sugar level changes

NOTEN may affect your diabetes. It may hide the symptoms of low blood sugar levels, such as a fast heart beat. It may also take longer for your blood sugar level to get back to normal even if you follow the usual treatment for diabetes. Your diabetic medicines may have to be changed or the doses adjusted. Atenolol could also increase the risk of severe hypoglycaemia when used with certain type of antidiabetic drugs called sulfonylureas (e.g. gliquidone, gliclazide, glibenclamide, glipizide, glimepiride or tolbutamide).

• have angina and continue to have angina attacks or have more of them while you are taking this medicine

NOTEN is used to help prevent angina, so your angina attacks should become less severe and occur less often.

• feel light-headed, dizzy or faint, and this problem continues or gets worse
• have to have any medical tests while you are taking NOTEN. It may affect some of the results of the tests.

Things you must not do

• Do not stop using this medicine suddenly
• Do not stop taking your medicine or lower the dose without checking with your doctor
• Do not take NOTEN to treat any other complaints unless your doctor tells you to
• Do not take NOTEN to treat any other complaints unless your doctor tells you to
• Do not take any new medicines with NOTEN unless your doctor has told you to

Things to be careful of

• Drink lots of water when exercising and during hot weather when taking NOTEN, especially if you sweat a lot.

If you do not drink enough water while taking NOTEN, you may feel faint, light-headed or sick.

• Be careful not to over exercise when you first start taking NOTEN
• Dress warmly during cold weather, especially if you will be outside for a long time (for example, when playing or watching sports in winter).
• You may feel light-headed or dizzy after taking NOTEN. This is because your blood pressure is falling suddenly. To help your body get used to the change in blood pressure, you may find the following hints useful:
  • Stand up slowly when getting up from a chair or bed. This will allow your body get used to the change in position and blood pressure.
  • If you feel dizzy, sit or lie down until you feel better.
  • If you feel faint, sit down and put your head between your knees.

Driving or using machines

Be careful before you drive or use any machines or tools until you know how NOTEN affects you.

NOTEN may cause dizziness, tiredness, light headedness or faintness in some people.

Make sure you know how you react to NOTEN before you drive a car, operate machinery or do anything else that could be dangerous if you are dizzy or lightheaded.

Drinking alcohol

Tell your doctor if you drink alcohol.

Alcohol may impact the effects of NOTEN.

Looking after your medicine

• Keep your tablets in the original container until it is time to take them
• Keep your tablets in a cool dry place where the temperature stays below 25°C

Store it in a cool dry place away from moisture, heat or sunlight; for example, do not store it:

• in the bathroom or near a sink, or
• in the car or on window sills.

Keep it where young children cannot reach it.

Getting rid of any unwanted medicine

If you no longer need to use this medicine or it is out of date, take it to any pharmacy for safe disposal.

Do not use this medicine after the expiry date.

6. Are there any side effects?

All medicines can have side effects. If you do experience any side effects, most of them are minor and temporary. However, some side effects may need medical attention.

See the information below and, if you need to, ask your doctor or pharmacist if you have any further questions about side effects.

Less serious side effects

Serious side effects

Very serious side effects

Tell your doctor or pharmacist if you notice anything else that may be making you feel unwell.

Other side effects not listed here may occur in some people.

Reporting side effects

After you have received medical advice for any side effects you experience, you can report side effects to the Therapeutic Goods Administration online at www.tga.gov.au/reporting-problems . By reporting side effects, you can help provide more information on the safety of this medicine.

Always make sure you speak to your doctor or pharmacist before you decide to stop taking any of your medicines.

7. Product details

This medicine is only available with a doctor's prescription.

What NOTEN contains

Do not take this medicine if you are allergic to any of these ingredients.

What NOTEN looks like

NOTEN tablets are a 10.5 mm x 5.5 mm white, normal convex, oblong tablet marked with AT/50 and α on the reverse. (AUST R 46250).

Who distributes NOTEN

Alphapharm Pty Ltd trading as Viatris

Level 1, 30 The Bond

30-34 Hickson Road

Millers Point NSW 2000

www.viatris.com.au

Phone: 1800 274 276

This leaflet was prepared in August 2026.

NOTEN® is a Viatris company trade mark

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