Is fadogia agrestis good for men to boost testosterone?

Potentially, but the evidence and safety uncertainties warrant caution. Fadogia agrestis may increase luteinizing hormone (LH), which can stimulate Leydig cells in the testes to produce more testosterone; it may also increase LH-receptor sensitivity. 1 2

• Testicular safety: Testicular-cell toxicity has been reported in rat studies, particularly at high doses; the relevance to humans is uncertain. 3 The transcript does not establish a safe long-term regimen, so cycling is advised: one discussed approach is three weeks on and one week off. 4
• Monitoring: Blood tests can help assess whether it affects hormone levels as intended and whether unwanted effects appear; the discussion recommends testing before starting and again after about four to eight weeks. 5 6

So, it may raise testosterone, but it isn’t an established, risk-free booster; use caution rather than assuming more is better. 7