Hello firstname.lastname@example.org, He should immediately take salts and rest. You can give him 1 liter of oral
rehydration solution in the next 2-3 hours. If his symptoms continue or his blood pressure falls further then
it is an emergency and he has to go to a hospital. Try to understand the reason and if required go for his
kidney function tests and follow up with a physician for a proper diagnosis. Take care!
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