Cosign on zinc. Haven't tried most of the stuff here, but looking into it, everything aside from the T-Nation product is inexpensive on vitaglo.com. As as usual, the key "ingredient" in the T-Nation product is available cheaply elsewhere, too.
Shoudl be good as long as you follow the directions for dosing on the bottle, no?
Dosing usually doesn't account for long term toxicity. The recommended daily intake is 11mg and the upper tolerable limit has been set at 40mg, which includes food sources. Many supplements have a much higher dose than needed, especially minerals because they are plentiful in a broad diet but more likely to cause problems in excess.
3 weeks cutting have lost about 5lb, seems about right i guess. All lifts are up although thats more likely due to adapting to the routine than anything else. Not really looking any different yet (obviously) slight increase in arm definition maybe. Thought i would feel super skinny by now but it's not too bad, can probably handle going down to 180lbs if i dont start losing too much strength. New PR deadlift 320 x 5 and DB rows 100 for sets of 6 with pretty strict/slow form.