I think it is important for horse owners to keep a calendar and be sure to mark when they start medication and stop. Also add any other important details like vaccinations, illnesses, shoeing or trimming, teeth work and worming. This is especially important if the horse gets hurt because time goes by quickly. Often you do not realize how long a wound is taking to heal and what all you used on it. I keep these calendars for several years and can compare notes on horses from year to year. When I had a big barn of horses, each horse had a clipboard and their own records on their stall door (as detailed as daily temperatures, feed and supplements…) but now I just write all of the horses on one calendar. Hope those are some helpful tips.