The half an hour rule

Do not eat or drink anything half an hour before and after taking the medicines. That means if you wish to take medicine at 12 o'clock then do not consume anything from 11.30 to 12; take the medicine on 12 o' clock and then till 12.30 do not consume anything. The only exception to this rule is water. Drinking water is permissible after or before five minutes of taking the medicines.