What is the most effect way to treat a wasp bite?

Benedryl: Oral benedryl to reduce itching, nsaids (motrin) to reduce pain/swelling) and topical neosporin to prevent local skin infection (esp from scratching).

Wasp Sting: Wash area w soap ; warm water. Apply ice in 10 min. Increments (10 on/10 off). Can try tylenol, (acetaminophen) Aspirin or Motrin for pain or Benadryl for swelling. Elevate affected area for swelling. Make paste of 2 parts baking soda ; 1 part water ; apply. Need tetanus shot every 10 years. Throat, airway, mouth swelling or difficulty breathing? Call 911! ** the yellow jacket can actually sting ; bite.