Do No Harm Rebus #181

If you're new to Rebuses, you can read how to solve a Rebus here (link opens in a new window).

Do you need a little help? Click to reveal a clue to the above Rebus.
A clue to help decipher the hidden meaning – To be damaging rather than helpful.
Do you think you have got it? Click to view the answer.
The word “Harm” is more than “good”, to give the answer: More Harm Than Good