Hello @cat30064, I've been taking R-ALA (600 mg twice daily) since 2016. I've had amalgam fillings that were done prior to 2016 and still have them in my mouth. I haven't had any adverse side effects or problems. I wished I had an answer for you. Reading the FDA information on the amalgam fillings that contain mercury might be helpful but I think if I had a concern, I would discuss it with my dentist and primary care doctor. Hopefully other members can also share any experience they have with amalgam (mercury) fillings.

-- Information for Patients About Dental Amalgam Fillings:
https://www.fda.gov/medical-devices/dental-amalgam-fillings/information-patients-about-dental-amalgam-fillings
-- FDA Issues Recommendations for Certain High-Risk Groups Regarding Mercury-Containing Dental Amalgam: https://www.fda.gov/news-events/press-announcements/fda-issues-recommendations-certain-high-risk-groups-regarding-mercury-containing-dental-amalgam