Beloved, nearly blind pet turkey seems to have a sick stomach. Best medication?

[Sparrow]

My turkey, Wimpy, seems to be sick to her stomach. She is several years old and has always been healthy as a horse until the past two days. Her appetite is poor all of a sudden, her stomach is making gurgling sounds, and she is having runny poop, hardly any solids and kind of a greenish color. She is acting droopy also. I have a sneaking suspicion that one of the eggs she was sitting on part-time(no Tom around, sometimes she sits on eggs for a short period and then gives up) was cracked and she at some of the not-so-fresh insides. v_v I love this turkey very much, so I want to know what the best medicine to give her would be, assuming she has a bacterial stomach issue going on.

 

[Sparrow]

Also, can I give her Vitamin B12 as an oral supplement, in hopes of increasing her appetite until she can recover? I already have some on hand.

 

[ivan3]

When you pick her up does her breath stink? Or, if you try to pick her up does she struggle as if pressure on abdomen causes pain? Anything from sour crop to e.coli from something foreign `trapped' in intestines, etc.
Use something like pedialyte for the electrolytes. Meal Worms mixed into mash of regular feed (or finely crushed hard boiled/scrambled eggs. I'd probably try Nystatin as the first medication.

Our hens have carried-off/eaten every `kind' of `unacceptable' egg without issue (doesn't mean that couldn't be the cause, but I'd be looking to some environmental `fungus', etc. - Spring and wet - if you're a Northern Temperate Zone).

Page from lengthy thread on sour crop (probably not the issue but initial GI treatment is pretty much the same): https://www.backyardchickens.com/t/714586/sour-crop/380

 

[Sparrow]

No struggling, no noticeable smell. Just watery poop without much/any food solids in it, no appetite, generally a bit droopy appearance.