Muscle Juice 2544, it helped (not enough now that I'm getting a G-Tube), its cheap, and iy tastes ok. Lots of cals too. If you want a no fat on Russian Bear 5000 is good...but the 5000 calories is with a gallon of whole milk, you get more in MJ but there is fat- not a whole lot though. MJ is my favorite so far it helped me gain some weight but I can't eat enough each day to offest the PI. I've tried Muscle Milk, MJ, RB5000, and CytoGainer. MJ is the best. RealMass by Gaspari I would probably try when I run out of the MJ but its a little more expensive. But gaspari is a legit company for supps.