Many children [and adults ] develop tiredness and fatigue following a viral illness, this is called post viral fatigue. However it is more likely that it is the Demazin that you are giving her that is making her so tired as it contains an old fashioned anti-histamine which is very sedating. Stop the Demazin and she should be a lot happier.Only use Salex nose drops twice daily to clear her nose. No other medicines or supplements are required.
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