Can you take too many supplements?  My friend got turned down for life insurance because his Creatinic(sp) levels were too high.  Made me wonder.  
I take:
Whey protein
Multi-Vit
Vit-C
Flax
Dessicated Liver 
ZMA
Sound like too much???
sure you can take too much.
Especially if the supp has a funky name that ends with -tech, -gun or -bomb, it's definitly too much BS.
Your supplements are okay, you can add creatine, glutamine, BCAA and green tea without a problem.
Tell your friend he has to drink more.