Common Terms Used: Human Growth Hormone, HGH, rHGH, Somatropin, Humatrope, Humatropin Genotropin, Saizen, Serostim, Geref, Genotropin, Norditropin, Nutropin AQ, Nutropin, and Protropin. Manufacturer: Pharmacy and UpJohn (Genotropin) Manufacturer: Serono (Geref, Sazien and Seristim) Manufacturer: Lilly (Humatrope) Manufacturer: Novo Nordisk (Norditropin) Manufacturer: Genentech (Nutropin AQ, ...