Hard Cough

My sister recently broke out into hives after taking this medicine as well as another medicine. We are trying to narrow down the possibilities, but I do not have the cough syrup’s ingredients. So if someone could please give me the ingredients or a place to get the ingredient list. Thanks!

There were a few different cvs cough syrups on the site, and u didn’t specify, so I just picked 3 different ones.

1. CVS Tussin Cough for Adults & Children
Active Ingredients (in Each 5 Ml Tsp): Dextromethorphan HBr (USP 10 Mg), Guaifenesin (USP 100 Mg). Inactive Ingredients: Aspartame, Benzoic Acid, Flavors, Glycerin, Hydroxyethyl Cellulose, Polyethylene Glycol, Purified Water.

2.
CVS Tussin Cough Formula
Active Ingredient (in each 5 ml Tsp): Guaifenesin (USP 100 mg). Inactive Ingredients: Anhydrous Citric Acid, Caramel, FD&C Red 40, Flavors, Glycerin, High Fructose Corn Syrup, Propylene Glycol, Purified Water, Saccharin Sodium, Sodium Benzoate.

3. CVS Tussin Cough Formula Maximum Strength
Active Ingredient (in each 5 ml Teaspoonful): Dextromethorphan HBr, USP (15 mg). Inactive Ingredients: Alcohol (1.4%), Citric Acid, FD&C Red No. 40 Flavors, Glucose, Glycerin, High Fructose Corn Syrup, Saccharin Sodium, Sodium Benzoate, Water.