Common use

Tenoretic is a combination medicine used to treat hypertension (high blood pressure). Lowering blood pressure may lower your risk of a stroke or heart attack. Atenolol is a beta-blocker. Chlorthalidone is a thiazide diuretic (water pill).

Dosage and direction

Use the medicine exactly as directed. Your blood pressure will need to be checked often and you may need other medical tests. Drink plenty of water each day while you are taking Tenoretic. Keep using this medicine as directed, even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medicine for the rest of your life.

Precautions

Tell your doctor if you have ever had: congestive heart failure; coronary artery disease (hardened arteries); angina (chest pain); asthma, bronchitis, or other lung disorder; diabetes; a thyroid or parathyroid disorder; liver or kidney disease; pheochromocytoma (tumor of the adrenal gland); gout; lupus; peripheral vascular disease such as Raynaud's syndrome; psoriasis; an electrolyte imbalance (such as low levels of potassium in your blood); or allergies (or if you are undergoing allergy treatments or skin-testing).
It may not be safe to breastfeed while using this medicine. Ask your doctor about any risk.

Contraindications

You should not use this medicine if you are allergic to atenolol or chlorthalidone, or if you have: a serious heart condition such as "AV block" (second or third degree); very slow heartbeats; heart failure; if you are unable to urinate; or if you are allergic to sulfa drugs.
Do not use Tenoretic if you are pregnant. It could harm the unborn baby.

Possible side effect

Common side effects of Tenoretic may include: slow heartbeats; feeling weak or tired; dizziness, drowsiness; numbness or tingling; pale skin, bruising or bleeding; depression; or upset stomach, loss of appetite, constipation.
Tenoretic may cause serious side effects. Call your doctor at once if you have: new or worsening chest pain; slow or uneven heartbeats; a light-headed feeling, like you might pass out; shortness of breath (even with mild exertion), swelling, rapid weight gain; cold feeling in your hands and feet; jaundice (yellowing of the skin or eyes); low sodium level (headache, confusion, slurred speech, severe weakness, vomiting, loss of coordination, feeling unsteady); or low potassium level (leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness or limp feeling).

Drug interaction

Tell your doctor about all your current medicines. Many drugs can affect Tenoretic, especially: digoxin, digitalis; indomethacin; insulin; lithium; any other beta-blocker - bisoprolol, carvedilol, labetalol, metoprolol, nebivolol, propranolol, sotalol, timolol, and others; or heart or blood pressure medication - amiodarone, clonidine, diltiazem, disopyramide, nicardipine, nifedipine, reserpine, verapamil, and others.

Missed dose

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

Overdose

Overdose symptoms may include nausea, extreme weakness, wheezing, chest tightness, trouble breathing, slow heartbeats, swelling, rapid weight gain, feeling light-headed, or fainting. Seek emergency medical attention.

Storage

Store at room temperature away from moisture, heat, and light. Keep away from children.