Drug interactions can cause your medicines to perform differently or put you at risk for dangerous adverse effects. Other medicines may impact how modafinil works, and modafinil may affect how other medicines work. It’s possible that the dose of modafinil or other medications you’re taking has to be adjusted.
Modafinil’s severe contraindications include:
At least 35 distinct medications interact negatively with modafinil. At least 35 distinct medications have moderate interactions with modafinil. At least 81 distinct medications have minor interactions with Modafinil.
Also, Hormonal birth control may not be effective while taking modafinil. While using modafinil, women who use birth control pills may have a greater probability of becoming pregnant. After quitting modafinil, this risk persists for one month.
These are just a few of the contraindications however this information may not have covered all potential drug interactions and in case you have certain other health concerns or if you are on any medications do consult your health care provider before taking modafinil.