Hi I am new to site have had A F for 7 years and had a stroke in January doing well and now on the new blood thinner rivaroxaban . I am on waiting list for ablation which is seven months wait so still not sure what to do. In the meantime would like to try magnesium but don't want it to upset my stomach as blood thinner won't be effective. Could anyone please tell me what magnesium I should try was going to order it from Healthspan 375 mg with added b vitamins. Would really appreciate any advice.