Pulled lower back leaning over then standing back up radiates to sides. Tylenol (acetaminophen) and using heat pad. Should I add Flexeril? Or? Should I rest?

Try this... Hello, Sandy...Tylenol (acetaminophen) is good a blocking sensation of pain at level of brain, but you may benefit from an anti-inflammatory (such as motrin or aleve) which quiet pain at site of injury as well as relieve inflammation. Flexeril may work but is hit or miss. Applying heat is beneficial in cases like this. You can rest a bit, but too much rest creates stiffness and is counter-productive.