Yes, that's an alternative. Both will produce a mild diarrhea to flush out the system. Since you're trying to administer the flush via syringe the smaller dose would be more convenient. Be sure she has access to fresh plain water as this will make her very thirsty and she can get dehydrated if...
I understand your concern. Sometimes, and I'm dealing with one at present, a hen will not respond to anti-yeast meds and improve. Instead, the yeast persists and the crop won't empty. This can be due to several reasons.
One is that the crop is saggy and not supported by chest muscles enough to...
Calcium isn't really a foreign substance. It's in the blood, tissue, and bones, and regulates the heart and reproductive system. You can start her on one tablet a day at any time.
It should be noticeably improved by now. If you are able, increase her dosage to three times a day. Offer grit in case she isn't finding enough, and offer yogurt or keifer or a probiotic to help restock her gut with good bacteria.
The neck movements are classic symptoms of sour crop. Yeast can make a crop unbearably uncomfortable. The contents sit and refuse to empty. Soon appetite suffers from the full crop dulling the urge to eat and after a while, left untreated, the hen will become listless and weak from hunger.
But...
I believe you're spot on @Aunt Angus that many folks confuse impacted crop and sour crop. The former should definitely not be stuffed further, while some sour crop patients seem to still retain an appetite unless the crop is totally stagnant (stasis). But with any crop issue, I've found that a...
The best way to get a pill into a chicken is to pry open the beak and stick it in. Chickens have a straight chute directly to their crop and the pill just slides down into it. Chickens don't chew their food before they swallow as we do, so they won't choke.
ACV and garlic are preventatives not cures. If you are indeed dealing with sour crop, it's a yeast infection. It needs a yeast killer. I wrote an article for this website on treating crop disorders. You might want to see if you've diagnosed your hen correctly and it's sour crop she has or...
I never isolate my sour crop patients. I see no reason for it. It's not true that you need to withhold food. Just avoid foods high in carbs. Plain crumbles or pellets are fine. Most sour crop patients have very little appetite, so you want to make food available so they can begin to eat and put...