Hormones and Peptides

Testosterone is presented as an inexpensive drug that some cash-pay clinics mark up heavily through bundled access. Peptides are framed as potentially useful but more expensive and protocol-dependent than testosterone. Kisspeptin may increase testosterone production and affect testicular volume, but it should be cycled because tachyphylaxis can occur. Testosterone replacement can be useful for men and women over 40 when dosed correctly, but it requires medical judgment and monitoring.