This is one place to get medicated flake food.
Never yet have I had the Camellanus worm im my tanks, have read Fenbendazole will treat though. Food is ideal, but fenbendazole is also available as a liquid which dissolves / mixes in water, a goat dewormer called Safeguard. It will kill snails and shrimp. Which would be better removed.
Check the ingredients in the different dewormer flakes for the one you want.