We are offering hygetropin 200iu, jintropin 100 iu, norditropin. Hygetropin is an 191 amino acid sequence somatropin of medium quality. While it is identical to human body’s own growth hormone, the freeze dried powder may contain some bacterial residue. Users are reporting different results from batch to batch. There are some reports of painful red welts around injection spots, which may be an indication of immune response. This is a potentially dangerous side effect as it may lead to the body developing immunity to it’s naturally produced growth hormone as well.