I make a lemon and water concentrate and I make a tablespoon of straight lemon juice. I take a few sips of the lemon and water, take my paste, take a tablespoon of straight lemon juice. Then follow with water or lemon water concentrate.
A edible lemon oil work great too to make your lemon water.
Get a package of bite sized peanut butter cups, or chocolate covered cherries if you prefer. Peanut butter cups are less messy. Inject the horse paste amount you need.
Hides the taste, easy to swallow.