HGH References and contacts
You should be able to find answers to most of your questions on the following sites:
somatropin.net - everything about Human Growth Hormone written in great detail. The site also lists all manufacturers and HGH brand names.
jintropin.cn - Jintropin HGH is a chinese brand of human growth hormone. It's 191 amino acid sequence (the right one) and has been on the market since 1997 with all positive reviews.
wikipedia.com - Wiki about Human Growth Hormone here is a link to wikipedia page about somatropin, which has a wealth of information about it's use, effects, side effects and history.
hypertropin.com - Hypertropin Human Growth Hormone another popular brand of HGH which has been on the market since 2006. There is plenty of reading material about usage on this website.
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