Hello, these drugs prevent cardiovascular disorders. Arpitor will lower your cholesterol, loprin prevents clotting and amlopine reduces the blood pressure. Although you haven t mentioned much, it seems that you have arterial hypertension and hyperlipidemia and perhaps also a cardiovascular disorder or you are at high risk for cardiovascular disorders. These drugs can rarely be stopped completely unless the initial indications were not very strong. Sometimes a dosage reduction can be tried but you already take the lowest possible doses. As I ve already pointed out, these drugs reduce the risk of cardiovascular disorders. Regarding their potential side effects or precautions you need to take: they may cause a bunch of side effects but they re too many to list here. I ll mention some of the most common ones though... The antihypertensive medications may cause hypotension or postural hypotension, so you should always check your blood pressure when you feel weak, dizzy or feel you re going to faint. The antiplatelet drug (loprin) may increase the risk for bleeding, so you should avoid injuries particulary of the head and you should always check your stool for signs of gastrointestinal bleeding (black stool). Finally the lipid-lowering drug may increase your blood sugar, may cause muscle aches and liver toxicity. Blood tests will reveal most of these disorders. I hope I ve answered your question. Please let me know if you need further assistance. Kind Regards, Dr Panagiotis Zografakis, Internal Medicine Specialist