Oral isotretinoin is the best treatment for patients with moderate acne in whom antibiotics are unsuccessful and for those with severe inflammatory acne. Dosage of isotretinoin is usually 1 mg/kg once/day for 16 to 20 wk, but the dosage may be increased to 2 mg/kg once/day.
Lots of different predators will prey upon other predators: Golden eagles are well known predators of smaller hawks. Collared lizards will eat other lizards. Crocodilians will feed on other predators, such as monitor lizards, snakes and even lions that come to the water to drink. Many snakes will eat other snakes. Some frogs, like the horned frogs of South America and the African bullfrog, readily feed on other frogs.
This is where one organism hunts and eats the other organism. The organism hunting is called predator, while the organism being hunted is called prey. Energy received from the sun is transferred from animals when the prey is eaten by the predator.he parasite usually lives on or inside the other organism. For example, mosquito is a parasite, feeding on a human while transferring the disease called Malaria. Other examples would be ticks or fleas that live off of many large mammals.