Are there a tool for drug interactions?

Click on the link , it will take you to the interaction checker and just follow the instructions:

https://www.drugs.com/drug_interactions.html

Yes, Drugs.com
You can list all of the medications you are currently taking, the dosage, when you take them, and how often you take them. You can then Save the information. Once you have this information saved, you can click on interactions and it will show you which medications interact with each other and whether the interaction is high, medium or low. It will also tell you why they interact and why you should not take them together.

I have my meds and my husband's there and it has been a life saver. It is so easy to use and has all the information right there. You can also add, delete or modify your meds as needed.

This is a great tool for managing your meds and even looking up what the meds you are taking are.
I also use this before I fill a new medication to make sure there are no interactions between meds I'm already taking and to find out as much as I can about the side effects Before I have the prescription filled.
If after researching the medications online at Drugs.com, I'm uncomfortable with what I find out, I call my doctor, tell them what I found out and ask if there is something else they can prescribe for me. NEVER be Afraid to ask your doctor to prescribe a different medication if you are not comfortable taking it.