You would probably be better off getting them locally w/ a script. If you can't get them I would try HGW/L-Citrulline.
Some peptide places in the USA sell them in mg/ml. They might have overnight services. Just look for the ones that don't require faxing for verification of company. You can find about that in their TOS/FAQ or something along those lines.
You may have already tried the above. Sorry if you have. Just throwing it out there in case nobody can meet your deadline or even has any spare stuff.