Coccidia is a protozoan parasite that is almost always present in a goat's environment. When the goat is infected with these parasites in small numbers, the coccidia causes very little damage and no disease. When a goat is infected in large numbers, this disease is called Coccidiosis.
Almost all species of animals have their own strain of coccidia. The coccidia of other animals, for example, rabbits and chickens, do not infect goats. The coccidia of sheep may be responsible for some problems in goats.
Please be aware that all goats usually carry a few coccidia. Adult goats have them, but are usually strong enough to resist them. People think of Coccidiosis as a kid "disease" because kids have not built up a strong enough immune system to resist the coccidia yet, this is why kids show more problems with coccidia. If you take a stool sample from your adult goats to the vet and they show a coccidia or two, it is nothing to worry about, it is virtually impossible to eliminate ALL coccidia and worms for a goat (it is normal to have a few). It's an overload of coccidia or worms that you need to be concerned about and act upon.
These are two Good Choices for Treament
Note: You can sweeten the drench with a little Stevia; it will heilp the kids no longer stand around gagging after their treatment and some even seem to like it. (a spoon full of sugar helps the medicine go down...)
My second "chemical" choice is:
Sulmet Drinking Water Solution 12.5%
Straight from the bottle; do not mix with water.
Note: I would sweeten this drench a little Stevia to make it a bit more pleasant to take for the kids (a spoon full of sugar helps the medicine go down...)