Healthy growth hormone levels have been associated with a youthful appearance, and a feeling of vitality. SeroVital-hgh is a patented, clinically tested, human growth hormone-boosting formula that increases hGH production, naturally. 120 capsules. Shown to cause a 682% mean increase in serum growth hormone levels with a single serving. Human growth hormone has been associated with decreased body fat, increased lean muscle mass, and stronger bones.