Patients having a predisposition for thrombus formation are effectively treated with compositions of acetylsalicylic acid, citric acid, thiamine and/or a zinc salt. The combination of aspirin and citric acid has been found to be significantly more effective in inhibiting platelet aggregability than aspirin...http://www.google.de/patents/US5401730?utm_source=gb-gplus-sharePatent US5401730 - Method for reducing platelet aggregation
