[leroy_masochist]

> Does this apply to Longfolia leaf (Tongkat Ali)?

No -- Tongkat and other naturally occurring compounds like Fadogia increase testosterone by stimulating the body's production of Luteinizing Hormone, which in turn spurs the testes to produce more testosterone.

If you want to know more about this, the Huberman Lab podcast has visited the topic several times. His view is that Tongkat and Fadogia are safe to take for long periods of time without interruption ("cruise") and he has stated that he himself takes them as a supplement.