What do you treat gapeworms for? I've had a lot of trouble with my birds lately, and am beginning to suspect it could be gapeworms. I've been treating the birds with vitamins, and electrolytes, antibodies, and Sulfa-Med for Cocci in their water, and also DE in their food (which normally works with worms for me.) The birds are still ill, with symptoms of lethargy, diarrhea (in the older birds, where they stay alive longer) drooping combs, gasping for air, revulsion towards food and water, and weight loss. No blood in poop, just a bit more green then usual.