Gemfibrozil has 53 known drug interactions based on U.S. FDA drug labeling data. Of these, 14 are contraindicated combinations that should be avoided entirely. 17 are classified as major interactions requiring close medical supervision. Notable interactions include combinations with Atorvaliq, Atorvastatin Calcium, Daprodustat. Patients taking Gemfibrozil should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.
- Total
- 53
- Contraindicated
- 14
- Major
- 17
- Moderate
- 21
- Minor
- 1
Contraindicated (14)
- Gemfibrozil + Atorvaliq— Increases risk of myopathy and rhabdomyolysis when used with ATORVALIQ. Concomitant use is not recommended.
- Gemfibrozil + Atorvastatin Calcium— Increases risk of myopathy and rhabdomyolysis when used with atorvastatin. Concomitant use is not recommended.
- Gemfibrozil + Daprodustat— Strong CYP2C8 inhibitor causing marked increase in daprodustat exposure. Contraindicated with DAPRODUSTAT.
- Gemfibrozil + Dasabuvir— Dasabuvir: Co-administration of gemfibrozil with dasabuvir increased dasabuvir AUC and C max (ratios: 11.3 and 2.01, res…
- Gemfibrozil + Ezetimibe And Simvastatin— Contraindicated due to increased risk of myopathy and rhabdomyolysis with ezetimibe and simvastatin tablets.
- Gemfibrozil + Fluvastatin— Concomitant administration increases risk of myopathy and rhabdomyolysis. Should be avoided.
- Gemfibrozil + Fluvastatin Sodium— Increased risk of myopathy and rhabdomyolysis when used concomitantly with fluvastatin. Avoid concomitant use.
- Gemfibrozil + Irinotecan Hydrochloride— UGT1A1 inhibitor may increase systemic exposure to irinotecan or SN-38. Do not administer unless no therapeutic alternat…
- Gemfibrozil + Pravastatin Sodium— Concomitant administration should be avoided due to significantly increased risk of myopathy/rhabdomyolysis.
- Gemfibrozil + Repaglinide— Gemfibrozil significantly increased repaglinide exposures by 8.1 fold. Do not administer repaglinide to patients receivi…
- Gemfibrozil + Resmetirom— Strong CYP2C8 inhibitor; concomitant use not recommended as it increases resmetirom Cmax and AUC, increasing risk of adv…
- Gemfibrozil + Rosuvastatin Calcium— Combination should be avoided due to increased risk of myopathy/rhabdomyolysis. If used together, limit rosuvastatin to …
- Gemfibrozil + Selexipag— Strong CYP2C8 inhibitor that doubled selexipag exposure and increased active metabolite exposure approximately 11-fold. …
- Gemfibrozil + Simvastatin— Drug Interactions ( A) HMG-CoA Reductase Inhibitors: The concomitant administration of gemfibrozil with simvastatin is c…
Major (17)
- Gemfibrozil + Alogliptin And Pioglitazone— Strong CYP2C8 inhibitor significantly increases pioglitazone exposure and half-life. Maximum recommended dose limited to…
- Gemfibrozil + Bexarotene— Concomitant administration increases plasma concentrations of bexarotene. Concomitant use is not recommended.
- Gemfibrozil + Colchicine Tablets 0.5 Mg— Lipid-lowering drug with potential for pharmacokinetic/pharmacodynamic interaction causing myopathy and rhabdomyolysis. …
- Gemfibrozil + Colestipol Hydrochloride— Absorption of gemfibrozil is significantly decreased when given simultaneously with colestipol hydrochloride.
- Gemfibrozil + Iptacopan— Strong CYP2C8 inhibitor may increase iptacopan exposure and increase risk for adverse reactions. Coadministration not re…
- Gemfibrozil + Itraconazole— Combined with gemfibrozil, itraconazole resulted in synergistic increase of repaglinide AUC (19.4-fold) and plasma conce…
- Gemfibrozil + Loperamide Hydrochloride— CYP2C8 inhibitor increases loperamide peak plasma concentration 1.6-fold and systemic exposure 2.2-fold, increasing risk…
- Gemfibrozil + Lovastatin— Lipid-lowering drug that can cause myopathy alone; increases risk of myopathy when given with lovastatin.
- Gemfibrozil + Pioglitazole And Metformin Hydrochloride— Strong CYP2C8 inhibitor significantly increases pioglitazone exposure and half-life, requiring dose reduction to maximum…
- Gemfibrozil + Pioglitazone— Strong CYP2C8 inhibitor significantly increases pioglitazone exposure and half-life. Maximum pioglitazone dose limited t…
- Gemfibrozil + Pioglitazone And Glimepiride— Strong CYP2C8 inhibitor significantly increases pioglitazone exposure and half-life. Maximum pioglitazone dose must be l…
- Gemfibrozil + Pioglitazone Hydrochloride— Strong CYP2C8 inhibitor that significantly increases pioglitazone exposure and half-life. Maximum pioglitazone dose must…
- Gemfibrozil + Pitavastatin— Gemfibrozil may cause myopathy when given alone. Risk of myopathy and rhabdomyolysis is increased with concomitant use w…
- Gemfibrozil + Pitavastatin Calcium— Gemfibrozil increases the risk of myopathy and rhabdomyolysis when used concomitantly with pitavastatin. Concomitant use…
- Gemfibrozil + Pitavastatin Magnesium— Gemfibrozil may cause myopathy when given alone. Risk of myopathy and rhabdomyolysis is increased with concomitant use w…
- Gemfibrozil + Rosuvastatin— Avoid concomitant use of gemfibrozil with rosuvastatin. If concomitant use cannot be avoided, initiate rosuvastatin at 5…
- Gemfibrozil + Warfarin— Caution when used together; warfarin dosage should be reduced and prothrombin time monitored to prevent bleeding complic…
Moderate (21)
- Gemfibrozil + Atorvastatin— OATP1B1 substrate; gemfibrozil inhibition may increase atorvastatin exposure, requiring dosing reduction.
- Gemfibrozil + Atrasentan— OATP1B1 substrate; gemfibrozil inhibition may increase atrasentan exposure, requiring dosing reduction.
- Gemfibrozil + Bosentan— OATP1B1 substrate; gemfibrozil inhibition may increase bosentan exposure, requiring dosing reduction.
- Gemfibrozil + Brincidofovir— OATP1B1/1B3 inhibitor increases brincidofovir AUC and Cmax, may increase adverse reactions. Monitor for elevations in tr…
- Gemfibrozil + Colchicine— Other lipid-lowering drug that may interact with colchicine. Monitor patients during coadministration.
- Gemfibrozil + Dabrafenib— Gemfibrozil is a strong CYP2C8 inhibitor that may increase dabrafenib exposure; dosing reduction may be required.
- Gemfibrozil + Eluxadoline— OATP1B1 inhibitor that may increase eluxadoline exposure. Requires monitoring for adverse reactions and potential dose a…
- Gemfibrozil + Enzalutamide— Gemfibrozil is a strong CYP2C8 inhibitor that may increase enzalutamide exposure; dosing reduction may be required.
- Gemfibrozil + Ezetimibe— OATP1B1 substrate; gemfibrozil inhibition may increase ezetimibe exposure, requiring dosing reduction.
- Gemfibrozil + Glibenclamide— OATP1B1 substrate; gemfibrozil inhibition may increase glyburide exposure, requiring dosing reduction.
- Gemfibrozil + Irinotecan— OATP1B1 substrate (active metabolite SN-38); gemfibrozil inhibition may increase irinotecan exposure, requiring dosing r…
- Gemfibrozil + Loperamide— Gemfibrozil is a strong CYP2C8 inhibitor that may increase loperamide exposure; dosing reduction may be required.
- Gemfibrozil + Montelukast— Gemfibrozil is a strong CYP2C8 inhibitor that may increase montelukast exposure; dosing reduction may be required.
- Gemfibrozil + Olmesartan— OATP1B1 substrate; gemfibrozil inhibition may increase olmesartan exposure, requiring dosing reduction.
- Gemfibrozil + Paclitaxel— CYP2C8 inhibitor; caution should be exercised when administering paclitaxel concomitantly.
- Gemfibrozil + Pravastatin— OATP1B1 substrate; gemfibrozil inhibition may increase pravastatin exposure, requiring dosing reduction.
- Gemfibrozil + Rifampin— OATP1B1 substrate; gemfibrozil inhibition may increase rifampin exposure, requiring dosing reduction.
- Gemfibrozil + Rosiglitazone— Gemfibrozil is a strong CYP2C8 inhibitor that may increase rosiglitazone exposure; dosing reduction may be required.
- Gemfibrozil + Treprostinil— CYP2C8 inhibitor increases treprostinil exposure (Cmax and AUC). Monitor for increased treprostinil effects.
- Gemfibrozil + Vadadustat— OAT3 inhibitor may increase vadadustat AUC, increasing risk of adverse reactions. Monitor for rapid hemoglobin increase …
- Gemfibrozil + Valsartan— OATP1B1 substrate; gemfibrozil inhibition may increase valsartan exposure, requiring dosing reduction.
Minor (1)
- Gemfibrozil + Montelukast Sodium— No dose adjustment needed when co-administered with montelukast sodium.