Like T said, it will depend on the iu/mg contained. I have a couple of 72iu, but I believe there are 36iu pens as well.
If I'm not mistaken those use a proprietary needle or else Iused the pen to combine diluent and GH, then drew from the pen cartridge with a slin pin, but I may be totally wrong.
As far as instructions for use, Google the term "humatrope pen instructions" and look for the Lilly .PDF.
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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