Can i give my 21 month old pedia care for a cold and zyrtec (cetirizine) for her allergies?

Yes: No problem as long as you give the correct dose.

OTC cold meds: Most over the counter cough and cold preparations in the children's section are FDA approved for children aged 2 years and older. Guaifenesin is generally regarded as safe as long as not combined with other medications such as decongestants or cough suppressants. These medications do not treat the illness, they mask the symptoms to promote comfort and rest. Zyrtec (cetirizine) is fine for 6 months +

Zyrtec (cetirizine) is ok pedcaNO: It is not recommended to give over the counter cough meds to children les than two years old .it is fine to give zyrtec (cetirizine) at this age at the appropriate dose