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Search Term: ritonavir (NORVIR, VIEKIRA)


Drug Profiles | Worst Pills, Best Pills Newsletter Articles

Drug and Dietary Supplement Profiles

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).
  • Drug Mix-Ups [hide all summaries]
    (June 2011)
    This article lists 355 drugs with names that are often confused with similar-sounding drug names. Find out what you can do to prevent getting the wrong drug.
  • 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.
  • Macrolide Antibiotic Drug Interactions [hide all summaries]
    (February 2008)
    The article discusses the adverse drug interactions between either of two widely-prescribed macrolide antibiotics, erythromycin (as in ERYTHROCIN) and clarithromycin (BIAXIN)and more than 40 other drugs that are listed in a table in the article. It also describes the nature of the adverse interactions that can occur.
  • 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.
  • 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.
  • New Drug Interaction Warnings For The Antidepressant Trazodone (DESYREL) [hide all summaries]
    (August 2004)
    In May 2004, the Food and Drug Administration (FDA) announced that new drug interaction warnings are now required in the professional product labeling or package insert for the antidepressant trazodone (DESYREL). Health Canada, the Canadian drug regulatory authority, announced similar warnings for the drug on July 9, 2004. This article lists those drugs that interact with trazodone.
  • 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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