The shop only had +6 calpol. I'm not a pharmacist but ...
+6 calpol is 250mg per 5ml
Infant is 120mg per 5ml
She normally has 5ml of the infant calpol so she can have 2.5ml of the +6 calpol because that'd be 125mg??
Also... wouldn't that be a cheaper way to buy calpol??