You may also want to consider a product called Clear Energy, a Chinese herbal formula that supposedly has the same effect, although in my experience it is not as effective. I hope you and anyone else who reads this can benefit from my experience. For a Lacto-Ovo vegetarian, bodybuilding is not only possible but quite easy. The three top proteins in terms of biological value are whey, eggs, and milk. If you are a vegan then the only issue I see is getting tired of the taste due to lack of variety.
Rice contains a lot of methionine but also has a high carb to protein ratio.
Therein lies the problem. But this is where the issue of getting tired of the taste arises. If you don't want to for personal reasons then I respect that. I am also a bodybuilder. The amount of protien isn't as important as the amount and combination fo essential amino acids.