I've tried a lot of pre-workout stuff through the years and been pretty disappointed -- so much so that I was making my own for a long time. I don't normally get on a pre-workout love fest, but my cousin won a contest on Jim Stoppani's web page or Facebook page (not sure which) and scored a free tub of Pre-Jym.

He was kind enough to give me four doses. I tried my first dose last night, and I can honestly say it's the most effective pre-workout I've ever tried. Energy and strength were huge, and clean. I scoped out the label and was pretty impressed.

20 servings to a tub, totaling 21 grams per serving, and it has generous doses of actives.

Creatine Hydrochloride 2 g
CarnoSyn® Beta-Alanine 2 g
Betaine (Trimethylglycine) 1.5 g
Taurine 1 g
N-Acetyl L-Cysteine 600 mg
AlphaSize® Alpha-Glyceryl Phosphoryl Choline 150 mg
Citrulline Malate 6 g
Beta vulgaris L. (beet extract) 500 mg
L-Leucine 3 g
L-Isoleucine 1.5 g
L-Valine 1.5 g
L-Tyrosine 1.5 g
Caffeine Anhydrous 300 mg
Huperzine A 50 mcg
Absorption Enhancer
BioPerine® 5 mg

Definitely a Five-Star experience.