Thank you for your responses. I hadn't mentioned that I use a protein supplement as well because most place on this site I've seen opposition towards it. I use Optimum Nutrition's all natural whey protein, which also has no artificial flavors or preservatives . 40 lbs of maltodextrin a month?? How did you break that down per serving?

As for the pineapple juice, from my research I have read that fiber (and fat as well) should be avoided in the post workout shake. Below I am providing part of an articles stating this. There was another place I read which was more explicit, saying the one time you don't want to have fiber is after your workout..

"Why high GI carbohydrates? Increased absorption rates, and an abruptly induced insulin burst. The faster you can get glucose into your bloodstream and muscles, the less protein destroyed and the more glycogen stored.

This is the one time of the day when you want to stay clear of low GI carbohydrate sources. Complex and fibrous carbs simply take way too long to digest and will not give optimal insulin release to offset muscle catabolism.

You also want to stay far away from any fat and fructose sources post-workout. Fructose will not replenish muscle glycogen but rather will replenish liver glycogen. Fat severely delays digestion because it metabolically requires so many more processes to break down.

Another vital key to post-workout nutrition is insulin sensitivity. Creating stronger insulin sensitivity is the primary way to get the most out of your post-workout high GI carbohydrate intake."

i actually discovered using pineapples when i was doing a pineapple parasite fast,where you only eat pineapples.i discovered that i became super pumped those entire 10 days! as i worked out , i began using it again post workout and it works great.Though ,not as powerfull as pure maltodextrin or one of those high cal weight gainers- but it still works great.also,Pineapple is a SUPER PROTEIN DIGESTANT,it literly obliterates EVERYTHING in its path!