Do not use Phexxi with Nuvaring. The Phexxi can eat into the ring and make the Nuvaring not work as well.
As with any new prescription, you should go over anything you’re already taking with your doctor or Pandia Health Care Advisor before starting on Nuvaring. This includes recreational drugs, over-the-counter meds, and even herbal supplements. Even something that seems relatively harmless such as St. John’s wort can cause Nuvaring to be less effective at preventing pregnancy. There are certain meds you should absolutely bring up. These are aromatase inhibitors, cancer, HIV, seizure, and chronic hepatitis C medications.