Here is the link to the page to a citrulline malate powder.
Citrulline Malate Powder - 180 grams
Did you want me to supply links to the articles I am reading on both too? I don't want to hijack your thread and post a bunch of links to outside sources talking about the contrasts. Sadly, I am having trouble coming to my own conclusion on what is better. For every credible (and not credible) source I find favoring one, I find an equally credible (and not credible) source favoring the other one.
I am finding it slightly difficult to determine which is better between L-cysteine and N-acetyl-cysteine (NAC); although I am beginning to lean towards NAC. Same thing with L-tyrosine and N-acetyl-tyrosine.