Fish Mox is one of the most popular fish antibiotics available, it is manufactured by Thomas Labs and it comes in two strengths, 250 mg and 500 mg capsules. The ingredient is Amoxicillin and comes in 250 mg strength as Fish Mox, and in 500 mg strength as Fish Mox Forte.
Fish Mox & Fish Mox Forte are by far the most popular fish antibiotics that are sold. The reason is that amoxicillin is a broad range antibiotic that is effective in many different bacterial infections.
On this side of the Fish Mox Forte bottle you see the ingredients, which are amoxicillin 500 mg, and you see the caution and storage instructions. The caution does say, "For aquarium and ornamental fish only, not for human use." Also on the label is the expiration date of this particular bottle and the manufacturer information.
On this side of the label are the instructions for how to use fish mox forte in your aquarium, and a few types of infections that the fish mox forte, amoxicillin is good for with fish.