Before you leave the clinic on Study Day 4, you will be given enough atiprimod to last until the next visit (in other words, through Study Day 6). You will be instructed to not eat food for at least 2 hours before or 2 hours after taking atiprimod, and to take the atiprimod in the morning at the same time each day. You will also be instructed to drink 1 - 2 glasses of water (preferred) or orange juice, soda, tea, or coffee during the 2 hours before and 2 hours after taking your daily dose of atiprimod. You will be given a diary for recording when you take the atiprimod, the type and amount of beverage consumed during the 2-hour period before taking atiprimod and the 2-hour period after taking atiprimod, other medications that you take, and any side effects that you experience.