I agree with @Wyorp Rock. Change 2: Go ahead and start the Safeguard and the Equimax at the same time. Dose the rest of your birds with the Safeguard only since they arnt showing tapeworm segments in feces.
Just for your info; blood in feces can be caused by worms.
Your vet is correct, it's not bumblefoot. It's footpad dermatitis. Here's an article on how to treat it:
https://www.backyardchickens.com/articles/early-stages-of-contact-dermatitis-foot-pad-dermatitis.78413/
It takes time for leg injuries to heal depending on the severity. If you've ever sprained an ankle, it also takes time to heal depending on the severity.
Valbazen: I'd use it for my birds since there wasnt any direct sunlight. If it had been outside in the heat with direct sunlight and the bottle felt warm, I'd dispose of it. Same for the Corid.
If in fact it's an impacted gizzard, give her tomato juice orally via syringe without needle. Give her a total of 10ml, slow administration 1/4ml at a time. Pull her wattles down and her mouth will open, let go of the wattles as soon as you give her the 1/4ml, so she can swallow the liquid...
Try giving her olive oil via syringe without a needle or large eyedropper. Then gently massage her crop. If she has an impacted crop, the olive oil and massaging should break up whatever it might be.
Safeguard Aquasol only treats two types of roundworms in poultry; large roundworms and cecal worms. It does not treat capillary worms, gizzard worms nor gapeworms.
Valbazen takes care of all types of poultry roundworms.
Please read Post #4 in this link: Turkey's can be given Valbazen. I've never owned ducks.
https://www.backyardchickens.com/threads/worms-in-chicken-poop.1575508/#post-26765905
Yes, that is definitely a large roundworm.
It would be best to worm all your birds with Valbazen. Chickens constantly peck the ground/soil and in doing so, they pick up worm eggs and swallow them starting the worms lifecycle. Redose your chickens again in 10-14 days.
I carefully examined EACH photo: I do not see any worms at all. The closest that resembles a worm is in photo #9385 top right corner. After blowing up the photo, it's not a worm, it is a thin white in color urate strand...nothing to worry about.
The tubular shaped feces in the middle is just...