Most likely, the white, oblong pill with '44 175' imprinted on it is a paracetamol pill.
It's basically the generic version of extra strength Tylenol. Other brand names for the drug that you might recognize are Actamin, Feverall, Genapap, Panadol, Tempra, Tactinal and Acephen.
Paracetamol is also called acetaminophen in some countries.
It can also be used to treat more serious problems such as arthritis and sciatica. Paracetamol can be used to reduce fever. It works by making one's body less aware of the pain, and in the case of fever, it plays with the brain to regulate your temperature.
As usual, always consult your doctor or pharmacist to find out more about these painkillers and if they are right for you.