Atenblock
Atenblock is a beta-blocker that helps lower blood pressure, treat heart conditions like angina and rhythm disorders, and can also be used for an overactive thyroid or to prevent migraines.
How to Use
Dosage
The usual dose for adults is 50–100 mg per day.
Method
Take the tablet with enough liquid, for example, a glass of water. It can be taken on an empty stomach or with a meal, usually once a day, but can be split into morning and evening doses.
The typical maximum daily dose is 100 mg.
Possible Side Effects
- •Tiredness
- •Muscle weakness
- •Cold and bluish feet
- •Dry mouth
- •Slow pulse
- •Sweating
- •Digestive problems
- •Vomiting
- •Diarrhea
- •Constipation
- •Nausea
- •Sleep disturbances
- •Reduced platelets (may appear as bruising or nosebleeds)
- •Reduced white blood cells
- •Hallucinations
- •Psychotic symptoms
- •Confusion
- •Depression
- •Nightmares
- •Anxiety
- •Impotence
- •Worsening vision
- •Visual disturbances
- •Dry eyes
- •Heart conduction disorders (AV block)
- •Worsening of heart failure
- •Worsening of Raynaud's phenomenon
- •Worsening of intermittent claudication
- •Bronchial narrowing and shortness of breath, and worsening of asthma (in asthmatics)
- •Rashes
- •Hair loss
- •Psoriasis-like skin reactions and onset or worsening of psoriasis
Important Warnings
- Do not take this medicine if you are allergic to atenolol or any other ingredient in this medicine.
- Do not take this medicine if you have untreated or symptomatic heart failure (with swelling or shortness of breath), a very slow heart rate (below 50 beats per minute), sick sinus syndrome or second/third-degree AV block (heart rhythm and conduction problems), or very low blood pressure (systolic pressure below 90 mmHg).
- Do not take this medicine if you have severe peripheral circulatory disorders (e.g., severe intermittent claudication or Raynaud's phenomenon) or severe obstructive lung disease (e.g., severe asthma, severe chronic bronchitis, or emphysema).
- Do not take this medicine if you have an untreated pheochromocytoma (a tumor of the adrenal gland medulla) or if you are taking MAO inhibitors (like moclobemide for depression), floctafenine (an anti-inflammatory painkiller), or sultopride (a psychiatric medicine).
- Talk to your doctor or pharmacist before using Atenblock if you have heart failure, asthma or other obstructive lung disease, diabetes, an overactive thyroid, first-degree AV block, Prinzmetal's angina, psoriasis, or kidney failure.
Show 4 more warnings
- Tell your doctor if you have severe allergies, as Atenblock can make allergic reactions worse and adrenaline less effective.
- Inform the anesthetist before surgery that you are taking Atenblock.
- Contact lens wearers: Beta-blockers, including Atenblock, can reduce tear production and cause dry eyes.
- Do not stop Atenblock treatment suddenly; it must be done gradually over 1-2 weeks under doctor's supervision, especially if you have coronary artery disease, as sudden stopping can worsen symptoms.
Use in Elderly Patients
Suitable for older adults, with specific precautions. Reduce the dose in moderately severe renal impairment. Significant adverse effects include bradycardia and orthostatic hypotension. Consider potential interactions especially with with drugs affecting the conduction system of the heart. (updated 20.1.2025)