If the cartridges for the pen are premixed like Saizen, I just drew from the cartridge, the pen was just a hindrance. With Humatrope, it seems like I reconstituted and still drew from the cart. Believe I did the same with Omnitrope and the Norditropin.
Personally, I like Serostim, which comes in vials and is just easier all around.
Make sure the 100iu kits you're looking at are pharmaceutical at that price. There are lots of "generic" GH but there are only a couple that have actually tested well.
Also, no the pens aren't stronger. It's just an added expense. 12mg of Somatropin = 12mg of Somatropin whether it's in a vial or loaded into a delivery device.
There are 3 loves in my life: my wife, my English mastiffs, and my weightlifting....Man, my wife gets really pissed when I get the 3 confused...
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