Table 2. Generic Over-the-Counter Sinus, Cold, and Allergy Drugs Marketed Under Multiple Brand Names in the United States^a .

Generic name	No. of different brand-name formulations	Selected brand names
		Single agent	Combination agents
Phenylephrine hydrochloride (oral)	261	Sudafed PE	Advil Congestion Relief, Alka-Seltzer Plus Cold & Cough Formula, Benadryl-D Allergy Plus Sinus, Children’s Dimetapp Cold and Allergy, Robitussin Cough & Cold, Sudafed PE Cold & Cough, Theraflu Cold & Cough, Tylenol Allergy Multi-Symptom
Dextromethorphan hydrobromide	218	Robitussin, Vicks DayQuil Cough & Congestion, Zicam Cough MAX	Alka-Seltzer Plus Cold & Cough Formula, Mucinex DM, Robitussin Cough Plus Chest DM, Sudafed PE Cold & Cough, Triaminic Cough & Sore Throat, Tylenol Cold & Cough Daytime
Pseudoephedrine hydrochloride	130	Sudafed	Advil Allergy Sinus, Aleve-D Sinus & Cold, Allegra-D, Clarinex-D, Claritin-D, Mucinex-D, Sudafed 12 Hour Pressure Plus Pain, Theraflu Max-D Severe Cold & Flu, Tylenol Sinus Severe Congestion Daytime, Zyrtec-D
Guaifenesin	127	Equate, Tussin, Mucinex, Robitussin	Cheratussin AC, Equate Tussin DM, Guaiatussin AC, Mucinex Fast-Max, Robafen DM Max, Robitussin Cough, ChestVicks, Zicam
Chlorpheniramine maleate	86	Chlor-Trimeton	Actifed Cold & Allergy, Alka-Seltzer Plus, Allerest Maximum Strength, Coricidin, Omnihist, Sinarest, Sudafed, Theraflu, Triaminic
Brompheniramine maleate	42	Ala-Hist, Dimetane	Bromfed, Children’s Dimetapp, LoHist
Diphenhydramine hydrochloride	34	Benadryl, Sominex, Unisom	Advil PM, Aleve PM, Bayer PM, Benadryl-D Allergy Plus Sinus, Excedrin PM, Goody’s PM, Midol PM, Motrin PM, Robitussin Night Time Cough & Cold, Sudafed PE Severe Cold, Theraflu Nighttime Severe Cold and Cough, Triaminic Night Time Cold & Cough, Tylenol Severe Allergy, Unisom With Pain Relief
Doxylamine succinate	10	Aldex, Unisom	Alka-Seltzer Plus, Coricidin, Tylenol Cold & Cough, Vicks NyQuil, Zicam Multisymptom Cold and Flu

^aData are from the US National Library of Medicine.⁶