What you will notice

First dose, within the hour: nothing you can feel, and everything on the blood draw, with LH climbing within thirty minutes. First week or two: with the signal given in the right pattern, testosterone builds as the testis is driven repeatedly, and energy and morning function are the first things people report. Weeks two to four: desire tends to move here rather than earlier, since the brain networks involved shift with hormone exposure over time rather than in one dose. Weeks four to eight: this is where the honest measure is a blood test rather than a feeling, and where the pattern of dosing matters more than its size, because the system fades under constant exposure and holds under intermittent. Longer: nothing is used up and the receptor stays answering if the gaps are kept, and the deeper question becomes what made the axis go quiet, because this molecule shouts upstream rather than fixing the cause.