Can i give my 7 year old theraflu?

Generally no: The directions for use of theraflu is for children over 12 years old. That being said it is safe for your doctor to instruct any patient over 4 years old to take the medication if they see fit. To determine whether this is appropriate for your seven year old ask your primary care physician.

Not advised: I would advise against using Theraflu for your child. If there are cold symptoms, providing good hydration, warm liquids and nasal saline help to relieve symptoms. If symptoms persist or worsen, then a visit to your doctor is recommended.