Tenolol Tablets (Atenolol)

Adult dosage

Hypertension: Adults typically take Atenolol 50 mg once daily either alone or in combination with a diuretic. If no effect is observed within 1-2 weeks, the dose can be increased to 100 mg once daily, not to exceed 100 mg per day. Angina: 100 mg daily can be divided into 1-2 doses, not to exceed 100 mg per day. Patients with renal impairment: For creatinine clearance of 15-35 ml/min/1.73㎡, the dose is 50 mg once daily.

This medication should not be administered to those who are allergic to the active ingredient or excipients. Patients with severe bronchial asthma or chronic obstructive pulmonary disease should avoid using this medication as it may worsen their symptoms. It is safer not to administer this drug to patients with diabetic ketoacidosis or metabolic acidosis. Patients with very slow heart rates (bradycardia) or heart conduction disorders should be cautious as this medication may cause problems with cardiac function. This medication may be dangerous for patients with cardiogenic shock, right heart failure due to pulmonary hypertension, congestive heart failure, severe hypotension, or severe peripheral vascular disorders. Patients with thyroid dysfunction resulting in thyroid storm or untreated pheochromocytoma should not be administered this medication. Careful monitoring and cautious administration are required for patients who may experience bronchial asthma or bronchospasm while using this drug, especially if used with bronchodilators. Patients at risk for congestive heart failure should use this medication while carefully monitoring their cardiac condition. Patients who have difficulty controlling diabetes or frequently experience hypoglycemia, or those who have been unable to eat properly for a long time should check their blood sugar diligently as signs of hypoglycemia may occur. Patients with severely impaired liver or kidney function and the elderly should start this medication at a lower dose and monitor their condition closely. If allergic reactions such as skin rash, itching, or hives appear while using this medication, discontinue use immediately. Watch out for eye-related symptoms such as reduced tear secretion, blurred vision, or dry eye. Cardiovascular symptoms such as heart rate decrease, cold extremities, chest pain, dizziness, and fatigue may also occur. Neuropsychiatric symptoms such as confusion, mood changes, insomnia, headache, or dizziness may appear. Gastrointestinal symptoms like digestive disorders, nausea, vomiting, diarrhea, or constipation may occur. Respiratory problems such as shortness of breath, wheezing, or bronchospasm may rarely occur, hence patients with respiratory diseases should be especially cautious. Signs of liver or kidney dysfunction may appear, so regular examinations and monitoring are necessary. This medication can reduce cardiac function; therefore, regular monitoring of heart rate, blood pressure, and electrocardiograms is necessary when used for a long time. Abrupt cessation of this drug may worsen symptoms of heart disease; thus, the dosage should be gradually reduced as instructed by a physician. Patients scheduled for surgery should discontinue this medication 24 hours prior to the procedure and inform the anesthesiologist of its use. Dizziness may occur during treatment, so driving or operating hazardous machinery should be avoided. When used with other medications that affect blood pressure and heart rate, potential interactions may occur, so consult a physician before use. Women who are pregnant or may become pregnant should use this medication cautiously due to potential effects on the fetus, and breastfeeding should be avoided or nursing should be discontinued during treatment. Safety in pediatric patients has not been sufficiently established, requiring special caution in children. Elderly patients should start at a low dose and their condition should be monitored closely. In cases of overdose, severe bradycardia, heart failure, hypotension, shortness of breath, and hypoglycemia may occur, necessitating immediate medical attention.

Serious side effects

Hives, angioedema, feeling of chest pressure, shortness of breath, sudden and severe headaches, altered consciousness, visual disturbances, paralysis, intrahepatic cholestasis (hepatotoxicity), elevated blood pressure, heart failure, atrioventricular block, sinus node block, decreased heart function, cardiogenic shock, severe hypotension, bronchial asthma, asthma attacks, heart failure, hypoglycemia, symptoms due to decreased heart rate, anaphylactic reactions.

Mild side effects

• Rash
• itching
• reduced tear secretion
• blurred vision
• dry eyes
• bradycardia
• cold extremities
• palpitations
• increased heart size
• hypotension

This medication should be stored in a tightly closed container to prevent air or moisture ingress, and it is safest to store at room temperature between 1°C and 30°C. Storing in this manner will help maintain the medication's effectiveness for a longer period.

Appearance

White round film-coated tablet

Package unit

30 tablets/bottle, 500 tablets/bottle