epocrates logo
epocrates logo
epocrates logo
  • 0

Interaction Check

epocrates logo

Sign in to access our clinical decision support tools

Sign in Create Account

Selected Drugs Clear All

  • remove Bactrim
    sulfamethoxazole/ trimethoprim
  • remove Cimzia
    certolizumab pegol
  • remove Loryna
    drospirenone/ ethinyl estradiol
  • remove Silenor
    doxepin

multicheck MultiCheck Results - 2 Interactions

Smiley face Smiley face

Monitor/Modify Tx

Smiley face Smiley face Bactrim (sulfamethoxazole/ trimethoprim) + Loryna (drospirenone/ ethinyl estradiol)

Monitor/Modify Tx


trimethoprim + drospirenone (contraceptive)

monitor potassium: combo may incr. risk of hyperkalemia (additive effects)

Caution Advised

Smiley face Smiley face Bactrim (sulfamethoxazole/ trimethoprim) + Silenor (doxepin)

Caution Advised


sulfamethoxazole + doxepin

caution advised: combo may decr. doxepin efficacy (mechanism unknown)

Additional Considerations

Smiley face Smiley face doxepin in Silenor

add MAO inhibitor to Interaction Check if recent (14 days) use

Help
FDA Reporting Form
 
Download Epocrates from the App Store Download Epocrates from the Play Store
About Us Features Business Solutions Help & Feedback
© 2026 epocrates, Inc.    Terms of Use Privacy Policy Editorial Policy Do Not Sell or Share My Information