Injectable HGH cannot be taken effectively by spray, tablets, or by swallowing. Injectable HGH - Human Growth Hormone Injection however is most effective when applied by sub-cutaneous or intramuscular injection. Human Growth Hormone (Hgh) are secretagogues, mostly amino acids, which cause the pituitary to liberate a small amount of human growth hormone, but these are much less effective than real recombinant human growth hormone (rHGH). True (rHGH) injectable hgh- human growth hormone injection is dispensed only with a prescription and can only be taken by sub-cutaneous or intramuscular injection. There are other alternative Injectable HGH products. There is the sub-lingual spray version which is taken under the tongue. The other alternative comes in tablet form. These methods however are certainly not as effective as the injectable HGH - human growth hormone form, but are used by patients who are afraid to take needles or simply cannot afford the injectable hgh treatment. More info Injectable HGH>> Injectable HGH - Human Growth Hormone Injection, Saizen® and Serostim® (Somatropin, rDNA Origin, for Injection) is produced by recombinant DNA technology. It has 191 amino acid residues and a molecular weight of 22,125 daltons. Its amino acid sequence and structure are identical to the dominant form of human pituitary growth hormone. Saizen® and Serostim® injectable hgh is produced by a mammalian cell line (mouse C127) that has been modified by the addition of the Human Growth Hormone gene. Saizen® and Serostim® Hgh, with the correct three-dimensional configuration, is secreted directly through the cell membrane into the cell-culture medium for collection and purification. Injectable HGH (Somatropin, rDNA Origin, for Injection) is a polypeptide hormone of recombinant DNA Origin. Humatrope - Injectable HGH - Human Growth Hormone Injection has 191 amino acid residues and a molecular weight of about 22,125 daltons. The amino acid sequence of the product is that of human growth hormone of pituitary origin. Humatrope is synthesized in a strain of Escherichia coli that has been modified by the addition of the gene for human growth hormone. More info Injectable HGH>>