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Tenormin (atenolol)

Tenormin packs and blistersAn essential role in the treatment of hypertensive disease is given to drugs from the group of beta-blockers, which effectively reduce blood pressure.

One of the most popular drugs in this group is Tenormin.

Composition and form of release

Tenormin is available in single tablet form in two dosages of 50 mg and 100 mg of the active ingredient atenolol. The dosage should be chosen by the doctor and depends on the severity of the symptoms, the degree of hypertension, and the age of the patient taking the drug.

The principle of action

The effect of the drug is based on the blocking of receptors sensitive to adrenaline and aldosterone, which can effectively control blood pressure. Atenolol protects the myocardium from the negative effects of hormones that stimulate increased pressure.

Due to this property, Tenormin is widely used in the treatment of angina pectoris, tachycardia, and various pains in the heart. Unlike other drugs of this type, Tenormin acts faster and leads to side effects less often.


The drug is prescribed for the treatment of the following diseases: second- and third-degree arterial hypertension, cardiac ischemia, angina of any form, heart attack, arrhythmia, tachycardia, and tremor.

Tenormin usageSchemes of the treatment

For the treatment of hypertension, doctors typically prescribe Tenormin in a dosage of 25 mg per day, which may be increased up to 50 mg as needed.

The maximum daily dose can be increased up to a level of 100 mg, but only with the doctor’s approval.

In the case of hypertensive crisis, a patient should put one tablet drug at a dosage of 25 mg under the tongue and wait for complete dissolution.

Side effects

Most often during treatment with Tenormin, patients may experience a sharp drop in blood pressure and bradycardia. These effects are due to the rapid action of the drug. There may also be a decrease in the pulse rate below acceptable levels, a violation of breathing, and migraine. A sharp decrease in blood pressure may lead to the development of shock, orthostatic collapse, fainting, or hypoxia.

When beginning to take the drug, patients may experience diarrhea and nausea. These symptoms usually disappear on their own several days later. Tenormin may negatively affect the nervous system, exerting a depressing effect. This can be accompanied by drowsiness and emotional lability. During treatment, there may be insomnia or impaired coordination of movements.


Regarding treatment with Tenormin, contraindications are associated primarily with acute heart failure. The drug is not allowed in the case of bradycardia, since there is a risk of heart failure due to the active component of the tablets. The medicine is not intended for use in children. More details about precautions and contraindications are described in the manufacturer’s instructions.

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