APOTHECARY PRODUCTS Ezy Dose Amber Liquid Oval Bottle – 8 ounce (oz) with Push-Turn Cap

Pharmacy said there is only one size stopper. None are made for 300 -500 ml bottles. These stoppers fit great

Good product - makes it easy to pull in syringes-as described

I use these for pet wormer bottles. They’re big in Animal hospitals. There really is no substitute for them. They often fit in meds to give your pets that needed measuring. Actually a ‘genius product’. My friends are going to love me. There’s no way I can use them all.

The top is slightly too small, so part of the outer rim sinks into the bottle opening rather than sitting on top like it should. But it doesn’t leak, so overall I’m pleased with my purchase

I’ve tried multiple different bottles, sizes, medication types, etc and these have not fit a single bottle. The plastic does not have any give, preventing the cap to fully insert and not just pop right out with inversion of the bottle.