Yes I have. Do you have to take them that often? When I was younger in Zambia, we used to take about four tablets of Chloroquin as a prophylaxis once in a long time. That helped a lot. Chloroquin was both used to cure and prevent malaria. As a prophylaxis, it did not give me any problems but as a medication to treat malaria, the side effects were horrifying, there was a time I thought it was better to die than suffer those side effects (general body itching of a severe kind, light headedness and a horrible taste in the mouth), but it was a powerful drug. I do not think they use it anymore, or may be they do. But I have never heard of anyone taking so many drugs and on a daily basis to keep them from having malaria. I am a bit surprised. You may want to see some doctors within Luanda, they have a lot of knowledge and you will find that they have better medications because they treat those diseases and deal with tropical conditions all the time. I wish you all the best and I hope you feel better.