My adult daughter is allergic to dairy...is there a pill that could help her?

Allergies : Immunotherapy may be the best way to treat allergies, anti allergic medicines may help but not necessarily treat her condition. I recommend talkig to her allergist for treatment recommendations.

Needs clarification: What some considered a dairy allergy could have been just an intolerance to the sugar in dairy or a full blown, life threatening event. You first need to clarify her situation. An allergist can help define the actual nature of her problem through testing & any potential treatment options. I would avoid any simple "fix" until you know more.