What to take for bee stings on arms?

See below: Oral Benadryl (diphenhydramine) is the best thing to take. You can also make a mixture of meat tenderizer and baking soda, paste consistency, and apply to the site. Bee sting sites tend to get worse over 24 to 48 hours, .

Options: Remove stinger by scraping along edge of skin with a credit card. Clean area with soap & warm water. Apply ice in 10 minute increments; alternating 10 on & 10 off. Try a bag of cold peas. You can take meds like tylenol, (acetaminophen) Aspirin or Motrin for pain or Benadryl for swelling. Make a paste of 2 parts baking soda & 1 part water & apply. Or you can apply a meat tenderizer poultice to the area.