Keflex side effects: Keflex is a cephalosporin antibiotic. This antibiotic can commonly cause gastrointestinal side effects like diarrhea, nausea, vomiting and sometimes, headaches. Serious side effects include anaphylactic reactions, decrease in blood cells and liver disease. ...Read more.
1 Vitamin E is an antioxidant for cardiovascular health, a blood thinner, improves circulation and is also an anti-inflammatory. 2  CoQ10 is an important nutrient for the circulation, especially if you suffer from high cholesterol or high blood pressure.
Niacin, also known as vitamin B3, helps support general blood vessel and circulatory function.â  Nature Made Flush-Free Niacin 500 mg uses a type of niacin that does not have the side effects of flushing commonly associated with regular niacin supplements.*. Helps support general blood vessel and circulatory function.â .