
HGH Factor testers reported more energy and mental focus, sounder sleep, and an overall feeling of wellness and youthfulness. Some noticed a decrease in the number of wrinkles on their faces, and overall smoother, tighter skin (perhaps due to shed body fat?). 90% of our testers said they intended to continue using HGH Factor after the end of the trial. HGH Factor was the best formula we tested and we give it a MUST BUY rating.
Retropin HGH 5000 is another sublingual spray consisting of amino acids and "real HGH" created by genetically-altered bacteria. Our reviewers were troubled by Retropin's claim to provide "real HGH" – because HGH is FDA-regulated and cannot be sold without a prescription.
Despite our misgivings, Retropin performed reasonably well for 20% our volunteers. They reported an increase in energy and alertness and general wellbeing. Overall, they reported feeling 5-7 years younger. The remaining 80%, however, reported no change whatsoever.
See below for more details.
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Naturally derived Growth Factor (HGH)
Water (purified)
Methylparaben
Propylparaben
Sodium Citrate
Retropin performed fairly well – but for only 1/5 of our testers. This great difference might be due to differing body chemistries reacting to the Retropin formula, or could be due to slipshod quality control during the manufacturing process. Some formulations are so delicate that they break down if left at room temperature, or if exposed to direct sunlight. We aren't sure why Retropin didn't work for all our testers, so we can only speculate as to reasons.
Because Retropin only worked for 20% of our testers, it earned a do not buy recommendation.