I don't recall any discussions here re B6&prolactin. Have you talked to your doctor re a scan for a prolactin producing adinoma?
Prolactin lowers dopamine, that takes away joy, satisfaction and reward; and that does affect libido directly independent of T levels. Prolactin is also a direct HPTA repressor, which often lowers T.
Dostinex/cabergoline is the drug of choice.
Wellbutrin is considered T and libido friendly.
Please list E2 lab result and range.
What other OTC and Rx drugs?
Any history of steroid use or prohormones?
Any history of use of drugs to reduce hair loss?
Any reduction in your width of peripheral vision?