Research protocols often include periodic breaks (such as 5 days on, 2 days off) to further preserve receptor response during extended use
"Nano based drug delivery systems: recent developments and future prospects"
However, IV glutathione is not approved for cosmetic use in several countries, including the Philippines, the UK, and Canada, and Indian dermatologists most commonly prescribe it orally
Diabetes 64 , 663672 (2015)
Other Pituitary Hormones No clinically significant changes in the levels of other pituitary hormones, including thyroid-stimulating hormone (TSH), luteinizing hormone (LH), adrenocorticotropic hormone (ACTH) and prolactin, were observed in subjects receiving tesamorelin in Phase 3 clinical trials
How often depends on the persons health and how theyre doing with treatment