Drug stock Amphastar Pharmaceuticals (AMPH) has formed a cup base and settled down after a steep sell- off in January. Now, as an IBD Sector Leader, Amphastar stock is about 18% off its all-time high. X Amphastar develops injectable, inhalation and intranasal medical and insulin products. Its products are used mainly in hospitals and urgent care clinics. It also makes over-the-counter asthma inhaler Primatene Mist, along with emergency glucagon treatment kits for low blood sugar. Amphastar ranks No. 1 among ...