Sometimes medicines will need to be given directly in the rat’s mouth. For example, Amoxicillin, which does not dissolve well and needs to be refrigerated. Or if you are not sure the rat will drink a “normal” amount of water from it’s bottle: for example, the rat is too sick or weak, or you are feeding it liquids or mashed foods. Here is the OC Dumbos online rat oral medicine dosing calculator. Please feel free to bookmark and share it.
Because of the small quantities involved, it is sometimes more convenient to pre-mix medicines that some in pills, capsules or packets with water to a specific concentration, so the OC Dumbos dosing calculator allows you to specify how many mg medicine there was per capsule (for example) and how many ml water you pre-mixed it with in a small bottle which you should usually store in your refrigerator. You would always first shake the bottle to mix the contents, then use a syringe to measure the specified amount from the bottle, and either add it to the drinking water or give it directly to the Rat.