Its rough I know and your lucky to have saved them.
I went through the same thing with a large blue beauty. Open mouth breathing, weezing, bubbles, it was lung worms. Panacur and antibiotics saved him and others as it managed to spread to others in my collection.
Some others were not as lucky.
He has since been dosed with flaygl to and is bigger and badder than ever but there has been a lasting effect from the lungworm infection that the vet told me to expect. The lung worms cause some damage that does not totally heal. Even though he is outward healthy eating extremely well you can hear some wheezing when he breathes. You probably can expect that too from yours.

I also followed up the flagyl with probiotic dusted of the frozen thawed mice. The flagyl kills the good bacteria with the bad so the probiotic helps the snake regain a healthy balance again. It also cures a regurge problem quite effectively while boosting appetite. I also have a RTGR and while it didn't get ill as the beauty it was very thin and full of open sores when I got her. With like treatment she is 100% now.
Mike.

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