The most important aspect of preventing and treating an allergic reaction to whey is to identify products that contain whey protein and avoid consuming them, according to MayoClinic.com. Whey proteins are found in cow's milk and make up about 20 percent of the proteins in dairy. If you've been diagnosed with a whey allergy, you're advised by Kids Health to avoid all dairy products. Many alternatives are available for people with a whey allergy to replace dairy products, such as soy milk, rice-based cheeses and almond alternatives. Talk with your doctor before modifying your diet.
Identification
The Lucile Packard Children's Hospital makes it clear that whey is commonly hidden in many products. Familiarize yourself with the ingredients that contain whey and read all ingredients and product labels before consuming the food. Non-dairy products can still contain milk byproducts that still contain whey proteins. Only products that state they are dairy-free do not contain any milk derivatives. Any kosher product that states it is "parve" is free of all dairy and is safe to eat if you're allergic to whey. Some unsuspected foods contain whey, such as processed meats.
Whey Reaction
If you're allergic to whey, your immune system fails to identify the protein as a safe substance. Kids Health says that your body begins to defend itself by creating antibodies and histamine to fight off the whey protein. This results in swelling and irritation in soft tissue, such as the lungs, skin, digestive system and nasal passages. Common symptoms of a whey allergy include nasal congestion, nausea, vomiting, diarrhea, shortness of breath, chest pain, coughing, wheezing, hives, itchiness, tingling, eczema and a runny nose.
Alternatives
Some safe alternatives if you have a whey allergy include soy, almond or rice-based beverages and foods. Eggs, cereals without milk, milk-free breads, carbonated beverages, coffee, tea, vegetable fat, margarine and freshly prepared meats are considered safe with a whey allergy, according to the Lucile Packard Children's Hospital. MayoClinic.com states that some products that may contain whey protein include artificial butter flavor, artificial cheese flavor, candy, chocolate and any ingredient that begins with the prefix "lact." Whey-free protein powders include soy protein powder and vegetable-based powders.
Consideration
If you accidentally consume whey, call your doctor. MayoClinic.com states that some over-the-counter antihistamines may treat minor allergy symptoms, such as nasal congestion, eye irritation and a runny nose. More severe allergic reactions, such as a drop in blood pressure, an increased heart rate and bluish colored skin, may require an injection of epinephrine.
