Ultracet and Lorcet are two different analgesic medications (painkillers) made of a combination of Acetaminophen (commonly known as tylenol)and one other medication.
Ultracet is made from a combination of acetaminophen and a medication called Tramadol.
Tramadol, or Tramadol Hydrochloride, is a pain medication designed to relieve moderate to moderately severe pain. Side effects that have been experienced while using this drug include dizziness, sedation, drowsiness, impaired visual acuity, nausea, and loss of appetite. This medication takes about an hour to take action with its effects peaking at 2 hours. You shouldn't take this medication/you should reasses the use of this medication if you are pregnant, lactating, have a history of seizures or kidney/liver impairment, use MAOIs, SSRIs, TCAs or any other medication that may depress the nervous system. ___________________________________________________________
Lorcet, however is made from a combination of acetaminophen and a medication called Hydrocodone.
Hydrocodone is almost always combined with acetaminophen because it increases the effects of hydrocodone. These medications combined are used to relieve moderate to severe pain. Side effects that have been experienced while using this medication include shallow breathing, slow heartbeat; feeling light-headed, fainting; confusion, fear, unusual thoughts or behavior; seizure (convulsions); problems with urination; or nausea, stomach pain, loss of appetite, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes). Less serious hydrocodone and acetaminophen side effects may include: feeling anxious, dizzy, or drowsy; mild nausea, vomiting, upset stomach, constipation; headache, mood changes; blurred vision; ringing in your ears; or dry mouth. You shouldn't take this medication / you should reassess the use of this medication if you have asthma, COPD, sleep apnea, or other breathing disorders; liver or kidney disease; a history of head injury or brain tumor; low blood pressure; a stomach or intestinal disorder; underactive thyroid; Addison's disease or other adrenal gland disorder; curvature of the spine; mental illness; or a history of drug or alcohol addiction.
Information from the 2008 Lippincott's Nursing Drug Guide by Amy M. Karch as well as http://www.drugs.com/hydrocodone.html