Yes, acetaminophen (Tylenol, Tempra, etc.) is a safe and effective option for relieving the pain associated with teething in an 8-month-old baby. You can also try non-pharmacological methods such as gently massaging your baby's gums with a clean finger or allowing them to chew on a cool, wet washcloth. If you have any other questions or concerns, feel free to ask for further guidance.