First get liver
function tests done to rule out doubts. intake of calcium supplements
, multivitamins, and high fibre diet.
ALT may have a meaning if SGPT also raised signifying liver disorder. complete LFT will make it more clear.
In mean time he must have rest, avoid exertion so that there is no load on liver. viral infections of liver is a common cause leading to malaise
and weakness,cramps.Give him lots of fruit juice, glucose
in water and see a physician without panic,