A nutritional supplement containing an extract obtained from the French maritime pine bark Pinus pinaster, with potential immunomodulating and antioxidant activities. The French maritime pine bark extract contains high amounts of the phytochemicals proanthocyanidins. Proanthocyanidins are able to scavenge free radicals, and therefore may inhibit cellular damage. This extract may also ameliorate the symptoms of lymphedema and improve blood flow. It might also stimulate the immune system and have antioxidant effects.