Benadryl for Hives

Mare is covered in hives from what I am 99% sure is from taking a nap in a pile of ants :roll_eyes:. She will generally easily eat tablets in some grain. Small TB, so approximately ~1,200 lb. How many 25mg tablets should she get? Is there anything to be concerned about giving benadryl? From what I have read seems safer than dex?

ETA: she is also still dealing with a corneal ulcer. In the spirit of trying every single way to injure herself :exploding_head:

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Diphenhydramine | EquiMed - Horse Health Matters

Not the focus of your post, of course, but if you are having difficulty with getting the eye to heal, I had great luck with moving from abx to silver sulfurdiazone ointment for an ulcer that didn’t heal for WEEKS.

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