Oh and I forgot your Beta Carotene question. You definitely want your multivitamin to contain Beta Carotene. They convert Beta Carotene into Vitamin A so that you don't overdose the frog with that particular vitamin. Vitamin A is easily overdosed on and can be deadly if done so. Frogs use Vitamin A to produce the sticky Mucus that coats their tongue and the Mucus layer they protect their skin with.