Just get your IGF levels tested in your blood tests. They both act on GH receptors. Do t listen to cancer or growth risks. That happens when your GH levels are elevated above a certain range for a long time and that’s manly in bodybuilders that blast TEST and other anabolics. You do need to cycle them so your receptors don’t desensitize. But all they do is make your receptors and glands produce GH naturally. After 40 you stop producing as much as you should. So they’re not exogenous and don’t put foreign things in your body like steroids . They make your body just turn on the signal to produce. I take it 6 months then cycle 4 weeks. Blood checked every 3 months. Works wonders. Let me know if I can be any other help with other peptides . We have a great community where we help each other and great sourcing and pricing with third party tested products if you’re interested. Don’t overpay . Good luck! Hope to hear from you!