Hi,

I don't blame you for being concerned. Because your kitten is so small, he might have trouble passing these two nipple tips, so please watch for these symptoms: lack of appetite, lethargy, vomiting, difficulty defecating.

A twice-daily dose of hairball remedy like Laxatone might help this material pass through his system, but due to his young age, if he begins to exhibit any symptoms of illness at all, I recommend bringing him to a vet, immediately.

I hope your little guy will be fine, and maybe it's time to either syringe feed him his formula, or teach him to lap from a shallow bowl or saucer. At 5 weeks old, he should be started on canned kitten food mixed with a little formula, on a flat plate or saucer (like for a teacup) and shouldn't require bottle feeding any longer. If he learns to lap the formula, you can continue it for a couple of more weeks, and then he should just be eating a quality canned (and/or) dry kitten food like Wellness. Innova, Felidae, Newman's Own, Natural Balance, or Halo.

Cher