Drug General Information (ID: DDISF3KT6G)
  Drug Name Pravastatin Drug Info Niacin Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Statins/Antihyperlipidemic Agents Vitamins/Antihyperlipidemic Agents
  Structure

 Mechanism of Pravastatin-Niacin Interaction (Severity Level: Moderate)
     Increased risk of other adverse reactions (Unspecific) Click to Show/Hide Mechanism Graph
      Drug Name Pravastatin Niacin
      Mechanism Rhabdomyolysis Rhabdomyolysis
      Key Mechanism Factor 1
Factor Name Adverse reactions
Factor Description An adverse reaction is an unexpected negative reaction to a medication or treatment that happens even when it's used correctly.
      Mechanism Description
  • Increased risk of adverse reactions by the combination of Pravastatin and Niacin 

Recommended Action
      Management The concurrent use of niacin and pravastatin should be avoided unless the benefit outweighs risk. Some authorities suggest that a dose reduction for pravastatin should be considered if concomitant therapy is required. It should also be noted that the risk of adverse effects is increased with niacin doses greater than 1 gram per day. In addition, if patients do receive this combination, they should be instructed to promptly report symptoms of muscular pain, weakness, or tenderness. Creatine kinase should be measured if such symptoms appear. If creatine kinase is elevated or if myopathy is suspected, the drugs should be discontinued.

References
1 Pan HY "Clinical pharmacology of pravastatin, a selective inhibitor of HMG- CoA reductase." Eur J Clin Pharmacol 40 (1991): s15-8
2 McGovern ME, Mellies MJ "Long-term experience with pravastatin in clinical research trials." Clin Ther 15 (1993): 57-64
3 Pasternak RC, Brown LE, Stone PH, Silverman DI, Gibson CM, Sacks FM "Effect of combination therapy with lipid-reducing drugs in patients with coronary heart disease and "normal" cholesterol levels: a randomized, placebo-controlled trial." Ann Intern Med 125 (1996): 529-40