What pill is white and oval and says Phillips on one side?

One drug that matches your description is Phentermine Hydrochloride it is white with blue dots. Here is a link that may help you identify it. Look at the imprinted information on the pill to make the correct match, and please do not take or ingest any pills that are not properly labeled.

https://www.goodrx.com/pill-identifier/blue/oval?page=5