I have a severe headache this morning behind my eyes (?) and have a choice of taking Hydrocodone w/Acetaminifin 10/325, or Oxycodone w/Acetamenifin 5/325. I want to take the least strongest and am thinking of splitting the Hydrocodone in half, but don t want to have it ineffective. I don t have headaches often, and contrary to medical advice, I was given one each of these by a friend in the event that I do get a headache. Will you advise which one is more effective, but doesn t make me feel off ?