Atenolol, or Tenormin, is a beta-blocker used for the treatment of hypertension and for individuals who experienced a recent heart attack. It is used to treat chest pain, also known as angina. Atenolol works by binding to beta receptors and blocking the effects that these receptors have on the heart. Normally, chemicals will bind to beta receptors found on the heart. The receptors respond by making the heart beat faster. Atenolol will decrease the rate and force of the heartbeat. This medication exerts several side effects, so be aware of what to expect before starting a new therapy.
Hypotension
Hypotension, which is low blood pressure, can occur with the administration of atenolol. The "Drug Information Handbook" states that hypotension is seen in 1 to 10 percent of people. Bradycardia, or an extreme slowing of the heart rate, may be seen in up to 10 percent of individuals. Rise slowly from a sitting or lying position to avoid injuries from a fall. Use caution when climbing up or down the stairs as well. Seek medical help if you experience a serious side effect such as worsening bradycardia or chest pain.
Dizziness
Dizziness is common in people who take atenolol. According to the "Drug Information Handbook," about 5 percent of individuals may experience this adverse effect. Use caution when driving or engaging in any activity that requires you to be alert. Headache is also seen in about 5 percent of people. These side effects will begin to slowly decrease as your body adjusts to the new medication.
Diarrhea
Atenolol may cause diarrhea in up to 10 percent of users. Drink plenty of fluids and eat small meals throughout the day to help with this. If diarrhea is persistent or worsens, contact your physician right away. Nausea is also present in 1 to 10 percent of individuals. Chewing gum or sucking on lozenges may help alleviate nausea.
Insomnia
Insomnia may occur in up to 10 percent of individuals using atenolol. Lethargy may occur in about 5 percent of individuals and may be linked with the insomnia. Discuss any concerns you may have with your health care provider and inform him if your symptoms worsen.
References
- "Drug Information Handbook 15th Edition"; Charles F. Lacy, RPh, PharmD, FCSHP, Lora L. Armstrong, RPh, PharmD, BCPS. et al; 2007
- "Pharmacotherapy: A Pathophysiologic Approach"; Joseph T. Dipiro, Robert L. Talbert, et al; 2008
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