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What is this medication?

TENORETIC (Atenolol/Chlorthalidone)
Antihypertensive; Beta-Blocker; Beta 1 Specific; Thiazide-Related Diuretic

TENORETIC (Atenolol/Chlorthalidone) is officially indicated for the treatment of hypertension.

How does this medication work? 

Beta 1 receptor is activated by adrenaline and is involved with cardiac output by increasing the volume of each pump as well as increasing the heart rate.  Atenolol works by blocking this receptor and has the reverse effect thereby reducing heart rate and stroke volume.

Chlorthalidone inhibits sodium and chloride reabsorption in the distal convoluted tubule resulting in a diuretic effect.  Sulfonamide derived agent.

How should I take this medication? 

Oral: Take Atenolol 50 mg/chlorthalidone 25 mg once daily; if optimal blood pressure response not achieved, may increase to atenolol 100 mg/chlorthalidone 25 mg once daily.

Note: Careful standing up too quickly as you may get dizzy.

How to Take: Follow instructions provided by physician/pharmacy label, take consistently at same times each day unless otherwise directed, store at room temperature. Preferably taken in the morning to avoid nocturia due to diuretic effect.

What should I watch for while using this medication? 

Before starting Atenolol make sure your physician is aware of any allergies or medications you currently take, if you have a low resting heart rate, asthma or other bronchospastic disease, cardiac conduction abnormalities, heart failure, diabetes, kidney disease, myasthenia gravis, peripheral vascular disease, hyperthyroidism, or if pregnant/breastfeeding.

Before starting Chlorthalidone make sure your physician is aware of any allergies or medications you currently take, if you have kidney disease, an electrolyte imbalance, adrenal insufficiency, diabetes, liver disease, hypercalcemia, hypokalemia, hyperuricemia (gout), systemic lupus erythematous, or parathyroid disease.

Note: Do not stop this medication abruptly to avoid rebound tachycardia, hypertension and in severe cases angina, heart attack, or arrhythmia.

What if I miss a dose?

If you miss a dose of medication, try to take it as soon as possible. However, if it is almost time for your next dose, take only that scheduled dose. Do not take double or extra doses.

How should I store this medication?

Keep out of the reach of children at all times. Store at room temperature, 59 to 86° F (15 to 30° C). Protect from light. Keep the container tightly closed. Properly dispose of any unused medication after the expiration date.

What are the possible side effects of using this medication?

Hypotension, dizziness, fatigue, bradycardia (low heart rate), ventricular tachycardia, cold extremities, hypokalemia (low potassium), worsening of hyperuricemia (can result in gout attacks), skin photosensitivity, hypochloremia, hyponatremia, hyperglycemia, anorexia, nausea, vertigo, constipation, rash, urticaria.

Note this is not a complete list of side effects for TENORETIC (Atenolol/Chlorthalidone), only common ones.