Than ks for contacting HCM. Dear patients as patients with high blood pressure are at higher risk of developing clots in blood which can cause heart or brain attack , so to prevent this loprin 75 a dose aspirin is given, which prevents clot formation. As aspirin in loprin 75 is in very low dose, in most patients it dose not cause any side effects. But in a small no. of patients it can have following side effects- 1 Bleeding from gut especially in patients with existing duodenal or gastric ulcers. Chances of bleeding further increases if the patient is taking steroids or other NSAID pain killers like ibuprofen. 2. Increase chances of bleeding in patients who are on anticoagulants like warfarin. 3.It can worsen the breathing symptoms in asthmatics. 4. Rarely it can cause allergic reactions. For you loprin 75 is fine and will have no effect on cholesterol levels. Regards