decongestants can be used with antihistamines or separately. as long as the dosgages are appropriate. newer recommendations do not support the use of these types of drugs for children under the age of six unless specifically prescribed and approved by the child's medical provider. decongestants have not proven to be very effective in the management of colds; and do not help children with allergies. antihistamines can be helpful for allergies however but again it is best to get the "okay" from your child's pediatrician because of the age.
can i give my 3 year old daughter childrens claritin and a decongestion med within 24 hours of each other? . the decongestion medicine in a prescription medicine that was given to her for congestion problems in the past. but i'm not sure if her stuffy nose and cough is now from pollen and seasonal allergies