Herb for Man F1: Impotence, night emission, weak and tired, low back and knee problem, low energy or ringing in ear.

1. Impotence: 826 impotence patients took F1 for up to 16 days and 723 significantly improved (87.53 percent), 82 improved (9.92 percent) and 21 did not improve after treatment (2.54 percent).

Toxicity and side effect: In lab animal tests, F1 can improve the outcome of animal swimming test, reducing total cholesterol and improving the immune functions. No toxicity or side effects ever been reported.