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 , imo).
lots of hot baths ( with epsom salts if you have them ...