My duckling need's help asap

[Aroooooo]

My duckling can't poop and its been hours he can't open his eyes also he makes a clicking noise when he breaths also I don't know if this is caused by the niacin or how we gave him the niacin but we noticed after we gave him the niacin. here are some pictures from how his eyes look like

 

[nuthatched]

I'm sorry to hear that.
How did you give him niacin? How much?

 

[nuthatched]

@Miss Lydia
@HollowOfWisps
@newduckmom20

 

[Aroooooo]

We gave him 2 mil in the morning and then 5 mil at night, we gave him the niacin slow and on the top since we didn't have the right syringe. This is the niacin we gave him https://www.amazon.com/Durvet-Vitam...ocphy=9029774&hvtargid=pla-403138627857&psc=1

 

[nuthatched]

We gave him 2 mil in the morning and then 5 mil at night, we gave him the niacin slow and on the top since we didn't have the right syringe. This is the niacin we gave him https://www.amazon.com/Durvet-Vitam...ocphy=9029774&hvtargid=pla-403138627857&psc=1

Where did you put it in his bill? Which side?

 

[Aroooooo]

Right

 

[Miss Lydia]

https://www.backyardchickens.com/ar...dications-to-all-poultry-and-waterfowl.73335/
For a new born duckling that was way too much .he may have aspirated how did you give what did you use?
This shows you how much to give for age
https://www.backyardchickens.com/threads/niacin-deficiency-in-waterfowl.1367557/