you absolutely can.... there are studies done on it that show the benefits after a year of use...
specifically look at the conclusion
Over 12 months, the ghrelin mimetic MK-677 enhanced pulsatile growth hormone secretion, significantly increased fat-free mass, and was generally well tolerated. Long-term functional and, ultimately, pharmacoeconomic, studies in elderly persons are indicated.
www.ncbi.nlm.nih.gov
CONCLUSION:
Over 12 months, the ghrelin mimetic MK-677 enhanced pulsatile growth hormone secretion, significantly increased fat-free mass, and was generally well tolerated. Long-term functional and, ultimately, pharmacoeconomic, studies in elderly persons are indicated.
MK-677 has exhibited substantial increases in serum GH and IGF-1 levels in multiple clinical trials now.
In a 12 month study conducted on postmenopausal osteoporotic women, 25 mg of MK-677 per day administered with or without alendronate for 12 months increased IGF-1 levels by approximately 40%.
Serum IGF-1 levels appeared to start tapering down over the next 11 months after they peaked in month 1. This suggests that utilizing MK-677 in a cyclical fashion may be a more beneficial way of maximizing its efficacy during use [
R].
In the 2 month study on 24 healthy obese males , after two weeks of treatment with 25 mg of MK-677 per day serum IGF‐I levels increased approximately 40% compared with pretreatment values and this effect was sustained throughout the treatment period [
R, R].
Serum concentrations of IGF-1 and IGFBP-3 during 2-month treatment with MK-677 (25 mg) or placebo daily in obese males
In a 2 year study including sixty-five healthy men and women ages 60-81, daily MK-677 significantly increased GH and IGF-1 levels to those of healthy young adults without serious adverse effects [
R].
Serum 24-h mean GH results in pivotal year 1
Serum 24-h mean IGF-1 results in pivotal year 1
In a study conducted on nine severely GH-deficient men ages 17-34 yr, 10 mg MK-677 increased serum IGF-1 levels by 52% on average, and increased GH levels by 79% on average.
50 mg MK-677 increased serum IGF-1 levels by 79% on average, and increased GH levels by 82% on average [
R].
Placebo Vs 10 mg MK-677 Vs 50 mg MK-677 in GH deficient men – GH Levels
Placebo Vs 10 mg MK-677 Vs 50 mg MK-677 in GH deficient men – IGF-1 Levels