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Trezix Side Effects

Generic Name: acetaminophen / caffeine / dihydrocodeine

Note: This page contains side effects data for the generic drug acetaminophen / caffeine / dihydrocodeine. It is possible that some of the dosage forms included below may not apply to the brand name Trezix.

For the Consumer

Applies to acetaminophen / caffeine / dihydrocodeine: oral capsule, oral tablet

As well as its needed effects, acetaminophen / caffeine / dihydrocodeine may cause unwanted side effects that require medical attention.

Major Side Effects

If any of the following side effects occur while taking acetaminophen / caffeine / dihydrocodeine, check with your doctor immediately:

More common:
  • Abdominal or stomach pain or tenderness
  • bleeding gums
  • blood in the urine or stools
  • bloody, black, or tarry stools
  • chest pain
  • chills
  • clay colored stools
  • cough
  • dark urine
  • decreased appetite
  • dizziness
  • drowsiness
  • fever
  • headache
  • high fever
  • itching or skin rash
  • lightheadedness
  • loss of appetite
  • nausea and vomiting
  • painful or difficult urination
  • pale skin
  • pinpoint red spots on the skin
  • sore throat
  • sores, ulcers, or white spots on the lips or in the mouth
  • swelling of the feet or lower legs
  • swollen glands
  • unexplained or unusual bleeding or bruising
  • unusual tiredness or weakness
  • yellow eyes or skin
Rare
  • Agitation
  • coma
  • confusion
  • decreased urine output
  • difficulty with swallowing
  • fast heartbeat
  • hives
  • hostility
  • irritability
  • lethargy
  • muscle twitching
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • rapid weight gain
  • seeing, hearing, or feeling things that are not there
  • seizures
  • stupor
  • swelling of the face, ankles, or hands
  • tightness in the chest
Incidence not known:
  • Cold sweats
  • darkening of the skin
  • decrease in the frequency of urination
  • decrease in the urine volume
  • difficult or troubled breathing
  • difficulty in passing urine (dribbling)
  • dizziness, faintness, or lightheadedness when getting up from lying or sitting position
  • fainting
  • irregular, fast or slow, or shallow breathing
  • overactive reflexes
  • pale or blue lips, fingernails, or skin
  • poor coordination
  • shivering
  • talking or acting with excitement you cannot control
  • trembling or shaking

Minor Side Effects

Some acetaminophen / caffeine / dihydrocodeine side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Difficulty having a bowel movement (stool)
  • drowsiness
  • relaxed and calm
  • sleepiness
Incidence not known:
  • Constricted, pinpoint, or small pupils (black part of the eye)
  • diarrhea
  • dry mouth
  • gas in the stomach
  • heartburn
  • seeing, hearing, or feeling things that are not there

For Healthcare Professionals

Applies to acetaminophen / caffeine / dihydrocodeine: oral capsule, oral tablet

General

The most frequently expected adverse reactions based on the individual components may include lightheadedness, dizziness, drowsiness, sedation, nausea, vomiting, constipation, pruritus and skin reactions.[Ref]

Hepatic

Acetaminophen:
Frequency not reported: Hepatotoxicity[Ref]

Respiratory

Dihydrocodeine:
Frequency not reported: Respiratory depression, cough suppression[Ref]

Psychiatric

Dihydrocodeine:
Frequency not reported: Confusion, physical and psychological dependence, hallucinations vivid dreams

Caffeine:
Frequency not reported: Anxiety, anxiety neurosis, excitement, insomnia, irritability, restlessness, tenseness[Ref]

Dermatologic

Dihydrocodeine:
Frequency not reported: Sweating, pruritus, skin reactions

Acetaminophen:
Rare (less than 0.1%): Serious skin reactions such as acute generalized exanthematous pustulosis (AGEP), Stevens-Johnson Syndrome (SJS), toxic epidermal necrolysis (TEN)

Caffeine:
Frequency not reported: Urticaria[Ref]

Hypersensitivity

Dihydrocodeine:
Frequency not reported: Anaphylactoid reactions, hypersensitivity reactions

Acetaminophen:
Rare (less than 0.1%): Anaphylactoid reactions
Frequency not reported: Hypersensitivity reactions including urticarial or erythematous skin reactions, laryngeal edema, angioedema[Ref]

Nervous system

Postmarketing reports: Serotonin syndrome

Dihydrocodeine:
Rare (less than 0.1%): Narcosis
Frequency not reported: Lightheadedness, dizziness, drowsiness, sedation, headache

Caffeine:
Frequency not reported: Headaches, lightheadedness, tremor[Ref]

Renal

Dihydrocodeine:
Rare (less than 0.1%): Acute renal failure
Frequency not reported: Granulomatous interstitial nephritis

Caffeine:
Frequency not reported: Diuresis[Ref]

Cardiovascular

Dihydrocodeine:
Frequency not reported: Orthostatic hypotension

Caffeine:
Frequency not reported: Extrasystoles, palpitations, tachycardia[Ref]

Endocrine

Postmarketing reports: Adrenal insufficiency

Opioids:
Frequency not reported: Androgen deficiency[Ref]

Chronic opioid use may influence the hypothalamic-pituitary-gonadal axis and lead to androgen deficiency; however, the causal role of opioids is unknown due to the lack of studies into the many medical, physical, lifestyle, and psychological stressors that influence gonadal hormone levels.[Ref]

Gastrointestinal

Dihydrocodeine:
Frequency not reported: Nausea, vomiting, constipation, abdominal pain, diarrhea, dry mouth, indigestion, spasm of biliary tract

Caffeine:
Frequency not reported: Diarrhea, nausea, stomach pain, vomiting[Ref]

Genitourinary

Dihydrocodeine:
Frequency not reported: Urinary retention[Ref]

Hematologic

Acetaminophen:
Frequency not reported: Thrombocytopenia, leukopenia, pancytopenia, neutropenia, thrombocytopenic purpura, agranulocytosis[Ref]

Metabolic

Dihydrocodeine:
Frequency not reported: Anorexia[Ref]

Ocular

Dihydrocodeine:
Frequency not reported: Miosis

Caffeine:
Frequency not reported: Scintillating scotoma[Ref]

Other

Dihydrocodeine:
Frequency not reported: Fatigue

Caffeine:
Frequency not reported: Tinnitus[Ref]

References

1. "Product Information. APAP/Caffeine/Dihydrocodeine Bitartrate (acetaminophen / caffeine / dihydrocodeine)." Xspire Pharma, Ridgeland, MS.

2. "Product Information. Trezix (acetaminophen / caffeine / dihydrocodeine)." WraSer Pharmaceuticals, Madison, MS.

It is possible that some side effects of Trezix may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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