I hope that you were just kidding, or I missed an inside joke, or something; That was the worst advice I have ever heard someone give.
Next time tell him to stay away from carbs, and drink less water, that way he'll only be getting 2 out of 6 essential nutrients.
TRIBEX has 2 very good ingredients:
Tribulus is a herb that works by increasing a hormone in your body (LH), which stimulates testosterone.
Avena Stativa is an oat that has many benefits on top of increasing test levels, including relaxation, and anti-depressant.
These 2 ingredients are probably the most effective at raising natural test levels. Combined with Stinging Nettle (which studies say frees natural test levels) You should see great results.