Omnitrope 10mg 30 IU comes in a reconstituted (pre-mixed) pen. Omnitrope is made by Sandoz and is a FDA approved Human Growth Hormone. Like all other FDA approved human growth hormone (HGH), Norditropin is a 191 amino acid chain. The nice thing about Omnitrope is that in comes in a pre-mixed pen that has a dial. There is no mixing HGH with bacteriostatic water. The Omnitrope pen comes with disposable needle caps, you do not need to mix or buy diabetic needles.