Suggest Effervescent Aspirin Preparations Available

Can you suggest effervescent aspirin preparations available in the market? - My mother had bleeding DU 5 weeks ago. She suffers from platelet aggregation (Thrombocytosis) which results in peripheral vascular symptoms )both extremetis - swelling, pain, sub cut bleeding from capillary cobgestion). She was on Aspirin/Clopivas both 75 mg a day and wa sdoing verywell till bleeding happened and drugs were stopped. Within 5 wks of stopping, symptoms have resurfaced. Platlet countis 6.6 lakhs/cm