gatorades, green tea ( theanine on it, will help your mood and to relax), tonic water ( it has quinine and it will help you with RLS )
Hylands restful legs to help you with RLS , hylands cramps legs
maybe some natural stuff to help you with sleep like melatonin and valerian root ( good for
anxiety too and it helped me with the stomach cramps
lots of hot baths ( with epsom salts if you have them ...