I realize this was posted 3+ years ago, but there needs to be another voice here. Tylenol by itself, look at taking 2 extra strength Tylenols, twice a day, not too much damage there, in fact probably not much if a lot of water is consumed. I am pregnant and I took 3 Tylenol extra strength yesterday is that too much? Get the answers you need, when you need them with automated insights and financial experts. Acetaminophen with codeine is a prescription pain medication. An overdose occurs when someone takes too much of this drug. An overdose is very dangerous and can be fatal. Taking too much acetaminophen may cause serious (possibly fatal). TYLENOL 3 CODEINE, MCNEIL This medicine is a white, round, tablet imprinted with TYLENOL 3 CODEINE and MCNEIL. Previous. The Tylenol content of Tylenol 3 limits the max dose of codeine by this dosage form to 390 mg of codeine. Another factor in how many it will take to get high , is how fast your liver can convert codeine into morphine. Some people called fast metabolizers, convert codeine to morphine much faster than most people, and it will take a smaller dose to get the same effect compared to others that. Codeine is an opioid pain medication. Acetaminophen is a less potent pain reliever that increases the effects of codeine. Tylenol with Codeine 3 is a combination medicine used to relieve moderate to severe pain. Is It Safe To Take 3 Tylenol 3 If The Pain Is So Bad That 2 Pills Doesnt Touch The Pain? I have been suffering for weeks now with leg pain that runs from my one side of the buttock down the back. Yes T3 can kill you just due to the the simple fact it has too much tylenol in it. For instance if you are used to take aim to 10 / 325 milligramsand now they have you taking 4t3 which each one has 300 milligrams of Tylenol in it you are now taking 1600 milligrams of Tylenol whereas you were taking 700 milligrams of Tylenol that. But i think you will be fine, my cousin took 15 Tylenold last year (she was depressed) and they rushed her to the hospital and she stayed there for 3 days. But you only took three you should be fine :).