Can i take 3 advil (ibuprofen) liquid gel nighttime?

Yes: One Advil (ibuprofen) liquid gel is 200 mg and you can take up to 800 mg per dose of Ibuprofen which is Advil (ibuprofen). Make sure you take it with some food in your stomach as it can make your stomach hurt. It is better to get Motrin which is 400 mg or Ibuprofen 800 or 600 mg tabs if you need a higher dose than Advil (ibuprofen) so you are not taking too many tabs at a time.