No contraindication: barley tea has been used to treat hangover, but like most hangover cures, there is little objective scientific evidence to prove this. Better to not drink so much that you GET hangovers, because it also means you are drinking enough to cause other problems, not the least of which is developing alcohol abuse/dependence, as well as liver, heart, stomach, pancreas etc. Hydration, vitamins, rest best
Answered 5/19/2014
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