 [ Symptoms ] can you take tylenol and codeine #3 while you have a concussion  my doctor prescribed me with tylenol and codeine #3 for a reoccuring stomach problem ive had over the past 5 years i got a concussion two weeks ago and today i just happen to be experiencing my stomach problem i am wondering if it is ok to take this medicine while concussed thanks [ Disease ] hi the reason behind the shrinkage is because all your blood drains from it slowly and very slowly as your penis comes back to body temperature it will re enlarge back to normal but you cant rush it the only way out of would not to cold bath or just keep for a special day once a week its either this or just suffer having your penis shrink twice a day good luck