How do members experience Gravinol (proanthocyanidins)? Top 5 reported purposes & perceived effectiveness Purpose Patients Evaluations Perceived Effectiveness This item is relevant to you: Amyotrophic lateral sclerosis 1 0 0% 0% 0% 0% 0% This item is relevant to you: General health 1 0 0% 0% 0% 0% 0%