Honestly man, I dont know if it WILL increase your load size. I've tried it in the past. I took as much as 100mg a day for over a week and saw no change in load size. Took half that dose the week before. I dont like taking stuff that has the potential to mess with my hormone levels so I didnt take it for much longer than that two weeksish.
You be much better off and see better results (spend less money too) taking Arginine ....at least 2 grams a day and drinking more water. Also check out my thread in the newbie forum (oh yea we're here arent we?)...its the sticky thread at the top on how to ejaculate with force and distance.