Somatropin brands compared
One molecule, several names, and which are still on the US market.
Checked 2026-10-22 Researched and written by Kymata Health Editorial · Sources cited inline Report an error
Short answer
Somatropin is recombinant human growth hormone, and every brand contains the same hormone. Genotropin, Humatrope, Norditropin, Omnitrope, Zomacton and Serostim have current US labels; Nutropin AQ was discontinued at the end of 2024. The brands differ in pen or vial, approved conditions and how they are stored, not in the hormone.
Which somatropin brands have a current US label?
Genotropin (Pfizer) (Genotropin label), Humatrope (Eli Lilly) (Humatrope label), Norditropin (Novo Nordisk) (Norditropin label), Omnitrope (Sandoz, a biosimilar to Genotropin) (Omnitrope label), Zomacton (Ferring) (Zomacton label) and Serostim (EMD Serono), which is labelled only for HIV wasting in adults (Serostim label).
Genentech discontinued Nutropin AQ NuSpin in the US on 31 December 2024. Saizen and Zorbtive have no current label on DailyMed (checked 2026-10-22).
How do the brands differ?
In the device and the label. Some come in prefilled pens, some in cartridges, some in vials; the labelled conditions also differ, for example Norditropin covers Noonan syndrome and Humatrope covers SHOX deficiency (Norditropin label; Humatrope label). Their half-lives after an injection under the skin range from about 2 to 3.8 hours by label (Norditropin label; Humatrope label).
What about once-weekly growth hormone?
Three weekly products are not somatropin brands but modified forms: somapacitan (Sogroya) binds albumin, somatrogon (Ngenla) carries hCG peptides, and lonapegsomatropin (Skytrofa) releases somatropin from a carrier (Sogroya label; Ngenla label; Skytrofa label).
Frequently asked questions
Questions
- Is HGH the same as somatropin?
- Yes. Somatropin is the generic name for recombinant human growth hormone (HGH).
- Are the brands interchangeable?
- They contain the same hormone, but devices, concentrations and labelled uses differ; a switch is a prescriber's decision.
Not medical advice This page summarises published labels and studies. It is not a recommendation to use any product; a clinician decides.