You may also want to consider pulsing doses of glutathione so as to promote your own production over time
AndroGel and Testim are common brand name topical testosterone preparations
Chun, R.F., Blatter, E., Elliott, S., Fitz-Gibbon, S., Rieger, S., Sagasti, A., Adams, J.S., Hewison, M., "Cloning of a functional 25-hydroxyvitamin D-1?-hydroxylase in zebrafish (Danio rerio)", Cell Biochemistry and Function 32 (8): 675-682 (2014)
How Glutathione Affects Gut Motility Glutathione's effect on bowel movements isn't direct
PRP Treatments made from ones own blood to support healing and tissue repair