Amber necklace for canine's?

Anyone tell me how the Amber necklaces work for canines?

They are the next teeth coming in and the last molar was terrible 😓 I've been against necklaces from the beginning but I just want some kind of relief without resorting to Tylenol. We've been doing frozen fruit in a masher and a Teething egg but since eye teeth are supposed to be one of the worst I'd like extra support for LO!

Also, If they worked for your LO can you recommend a certain brand or specific necklace? TIA!