Hello Mamas,So I was really skeptical of this product but I decided to try it after it being recommended and seeing mutiple moms with their babies wearing the necklace. My infant is an exception, he got his 4 bottom teeth what seemed like all at once and his top two not even 2 weeks after. So miserable/cranky is his middle name. I will say there were a few days he did not wear it and you could tell a drastic difference of how cranky he was. He has also slept better at night when he was wearing it in the day time.I only gave this 4 starts not 5 because of the drool aspect. He still slobs all over the floor regardless. I personally did not see a difference in the amount that he drooled with the amber necklace on.