Hope4bb - the pens come is various dosage (300, 450, 900, I think). I m w private and I think government hospitals pay half the price per IU. Say you get the 450iu pen, each day u only need to dial to 450 (there is a lock mechanism so you only dial your dosage) and inject to the end of the pen. If say you reduced to 225iu per day, the pen can be used as 2 separate injection (day1 inject from 450iu to a mark that says 225iu, the keep the pen & inject tomorrow's 225. Similar, if dosage reduce to, say 150, then the pen can be used 3 times. Also, gonal-f can be self-injected in thigh or tummy (near belly button area) not necessarily at butt only, which allows you to self-inject. Please speak to your doctor of these options (pen and injecting other than butt).