Description: Congestap is an over-the-counter cold and allergy medicines. It is a single combination preparation marketed to relieve symptoms of the common cold, containing brompheniramine (an antihistamine) and phenylephrine (decongestant replacing the formerly used pseudoephedrine, which itself replaced phenylpropanolamine). 
Dosage: Refer to the prescription and instruction given to you by your doctor.
Precautions: Do not exceed or prevent being overdosed because you might experience side effects.