Help with database

Help with database

Hi Everyone,
 
   I am very new to this but I am hoping someone can help me. I am trying to create a database where people can select the items that a dog may be allergic to and it will spit out the brands. I have created the form but do not know how to reference the mutl-select to a databse. Basically the idea is say someones dog is allergic to chicken and beef as well as carrots and pea it will spit out say 10 brands and the model of the food they can try. I also need an easy way of importing this information. Now I have it in an excel spreadsheet.