Both complications occur most frequently in the first 90 days after Ticlopidine hydrochloride tablets are started. To make sure you don’t develop either of these problems, your doctor will arrange for you to have your blood tested before you start taking Ticlopidine hydrochloride tablets and then every 2 weeks for the first 3 months you are on Ticlopidine hydrochloride tablets. If detected, neutropenia and thrombocytopenia can almost always be reversed. It is essential that you keep your appointments for the blood tests and that you call your doctor immediately if you have any indication that you may have TTP or neutropenia. If you stop taking Ticlopidine hydrochloride tablets for any reason within the first 3 months, you will still need to have your blood tested for an additional 2 weeks after you have stopped taking Ticlopidine hydrochloride tablets.