In most cases-yes. The nutrients found in the Optimal capsules are the same nutrients you find in your foods; however, because of supplementation you are able to consume these nutrients at levels you can't get from your foods. Therefore, if your doctor allows you to eat, you can take your supplements. The only precaution would be if you are taking a blood thinner known as Coumadin or Warfarin. Please click here to learn what to do if you are taking this medication.