Search Type: drug or dietary supplement name
Search Term: clarithromycin (BIAXIN, BIAXIN-XL, PREVPAC)


Drug Profiles | Worst Pills, Best Pills Newsletter Articles

Drug and Dietary Supplement Profiles

A comprehensive review of the safety and effectiveness of this drug. If the drug is not a Do Not Use product, information on adverse effects, drug interactions and how to use the medication are included.
Search results below include drug profiles where your selected drug is a secondary subject of discussion
  • telithromycin (KETEK)
    We list this drug as a Do Not Use drug because it is no more effective than other antibiotics and causes irregular heartbeat.

Worst Pills, Best Pills Newsletter Articles

Search results below include Worst Pills, Best Pills Newsletter Articles where your selected drug is a secondary subject of discussion
  • FDA Warning: Commonly Used Diarrhea Drug Can Cause Life-Threatening Heart Problems [hide all summaries]
    (May 2017)
    Find out which commonly used prescription and over-the-counter diarrhea medications can cause dangerous abnormal heart rhythms and cardiac arrest if taken at higher-than-recommended doses.
  • Is XARELTO Really the 'Right Move' for Patients With Blood Clots or Risk for Stroke? [hide all summaries]
    (April 2016)
    If you watch TV, you likely have seen ads touting the advantages of the new oral antico-agulant (blood thinner) rivaroxaban (XARELTO). Learn why we have designated this drug as Do Not Use for Seven Years (until at least July 2018).
  • Often-Misused Fluoroquinolone Antibiotics Pose Serious Risks [hide all summaries]
    (October 2015)
    Fluoroquinolones are the biggest-selling and most overprescribed classes of antibiotics in the U.S. Learn why Public Citizen's Health Research Group designates two of the five available fluoroquinolones as Do Not Use and why the other three should be used only in limited circumstances.
  • Watch out for Interactions Between Drugs for Erectile Dysfunction and Other Medications [hide all summaries]
    (January 2009)
    The article lists 56 drugs that can interact with the three drugs for erectile dysfunction (ED): sildenafil (VIAGRA), tadalafil (CIALIS) and vardenafil (LEVITRA). Eight of the drugs are either nitrates such as nitroglycerin or a certain group of high blood pressure drugs.In combination with ED drugs, these drugs can cause a dangerous fall in blood pressure that could lead to a heart attack or stroke. Thirty-two other drugs can inhibit the enzyme that helps the body to eliminate the ED drugs, resulting in abnormally high blood levels of the drugs and a potentially harmful "overdose" even though you are actually taking the recommended amount. The other 16 drugs speed up the metabolism of the ED drugs, thereby lowering the blood levels and reducing the effectiveness of the ED drugs.
  • Calcium Channel Blocker Drug Interactions [hide all summaries]
    (May 2008)
    This article lists more than 60 prescription drugs that can interact with calcium channel blocking drugs such as amlodipine (NORVASC),diltiazem (CARDIZEM, DILACOR XR TIAZAC)or nifedipine (PROCARDIA)to either cause toxicity or to lessen the effectiveness of the calcium channel blocking drugs. Included in the lists are a number of drugs that we list in Worst Pills, Best Pills as DO NOT USE or LIMITED USE drugs. The article also explains the different kinds of toxicity that can ensue from these interactions.
  • Drug Interactions: Warfarin (COUMADIN) [hide all summaries]
    (December 2007)
    This article explains how to understand the International Normalized Ratio (INR), a test applied to a sample of a patient’s blood to determine how “thin” it is when you are using the blood thinner COUMADIN (warfarin). In addition, the article lists more than 50 drugs or dietary supplements that can interact harmfully with COUMADIN to cause the blood to be too thin (abnormal bleeding) or not thin enough which could result in lessening the effect of COUMADIN in stopping blood clot formation.
  • A Review of Ranolazine (RANEXA) For Chronic Chest Pain [hide all summaries]
    (March 2007)
    Although the FDA medical officer in charge of reviewing ranolazine recommended that ranolazine's professional product labeling display a black box warning about potential disruption in the heart's electrical cycle, the drug does not have a black box warning.
  • FDA Issues Public Health Advisory About Liver Toxicity with the Antibiotic Telithromycin (KETEK) [hide all summaries]
    (March 2006)
    There is no reason to take telithromycin.(KETEK) There are safer and equally effective antibiotics available that are approved to treat the same illnesses. If you or a family member experience the symptoms of potential liver toxicity listed in the article, contact the prescriber immediately. Do not stop taking this antibiotic without an urgent call to your physician so you can be placed on a different, safer antibiotic.
  • Extensive New Warnings for the Potent Pain Drug Fentanyl Transdermal System (DURAGESIC) [hide all summaries]
    (October 2005)
    As the black box warning suggests, fentanyl skin patches should not be used in the following situations:in patients who have not previously been prescribed opioid painkillers, in the management of acute pain or in patients who require opioid pain killers only for a short period of time.
  • A Review of New Antibiotic Telithromycin (KETEK) [hide all summaries]
    (June 2004)
    Telithromycin (KETEK) has shown to be no more effective than other antibiotics: amoxicillin, cefuroxime, clarithromycin, and trovafloxacin.
  • DO NOT USE UNTIL 2011 Eplerenone (INSPRA) For High Blood Pressure [hide all summaries]
    (December 2003)
    This statement appears in the professional product labeling, or package insert, for eplerenone: “The principal risk of INSPRA is hyperkalemia. Hyperkalemia can cause serious, sometimes fatal, arrhythmias (heart rhythm disturbances).”

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