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Nodolor Side Effects

Generic Name: acetaminophen / dichloralphenazone / isometheptene mucate

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

For the Consumer

Applies to acetaminophen / dichloralphenazone / isometheptene mucate: oral capsule

As well as its needed effects, acetaminophen / dichloralphenazone / isometheptene mucate may cause unwanted side effects that require medical attention.

Severity: Moderate

If any of the following side effects occur while taking acetaminophen / dichloralphenazone / isometheptene mucate, check with your doctor or nurse as soon as possible:

Less common:
  • Unusual tiredness or weakness
  • Black, tarry stools
  • blood in urine or stools
  • pinpoint red spots on skin
  • skin rash, hives, or itching
  • sore throat and fever
  • unusual bleeding or bruising
  • yellow eyes or skin
Symptoms of dependence on this medicine
  • Headaches, more severe and/or more frequent than before
Symptoms of acetaminophen overdose
  • Diarrhea
  • increased sweating
  • loss of appetite
  • nausea or vomiting
  • pain, tenderness, and/or swelling in the upper abdominal (stomach) area
  • stomach cramps or pain

Severity: Minor

Some acetaminophen / dichloralphenazone / isometheptene mucate 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:
  • Drowsiness
  • Dizziness
  • fast or irregular heartbeat

For Healthcare Professionals

Applies to acetaminophen / dichloralphenazone / isometheptene mucate: oral capsule


Transient dizziness and skin rash can usually be eliminated by reducing the dose of acetaminophen/dichloralphenazone/isometheptene.

Hypersensitivity side effects including transient dizziness and skin rash have been reported with the use of acetaminophen/dichloralphenazone/isometheptene. Hypersensitivity reactions, including anaphylaxis and fixed drug eruptions have been reported rarely in association with acetaminophen use.


Alcoholic patients may develop hepatotoxicity after even modest doses of acetaminophen. In healthy patients, approximately 15 grams of acetaminophen is necessary to deplete liver glutathione stores by 70% in a 70 kg person. However, hepatotoxicity has been reported following smaller doses. Glutathione concentrations may be repleted by the antidote N-acetylcysteine. One case report has suggested that hypothermia may also be beneficial in decreasing liver damage during overdose.

In a recent retrospective study of 306 patients admitted for acetaminophen overdose, 6.9% had severe liver injury but all recovered. None of the 306 patients died.

One study has suggested that acetaminophen may precipitate acute biliary pain and cholestasis. The mechanism of this effect may be related to inhibition of prostaglandin and alterations in the regulation of the sphincter of Oddi.

Cases of acute pancreatitis have been reported rarely with the use of acetaminophen.[Ref]

Hepatic side effects including severe and sometimes fatal dose dependent hepatitis have been reported with the use of acetaminophen in alcoholic patients. Hepatotoxicity has been increased during fasting.[Ref]


Gastrointestinal side effects have been rare with the use of acetaminophen except in alcoholics and after overdose.[Ref]


Renal side effects including acute tubular necrosis and interstitial nephritis have been rare with the use of acetaminophen. Adverse renal effects have been most often observed after overdose, after chronic abuse (often with multiple analgesics), or in association with acetaminophen-related hepatotoxicity.

Acute tubular necrosis with acetaminophen use usually occurs in conjunction with liver failure, but has been observed as an isolated finding in rare cases. A possible increase in the risk of renal cell carcinoma has been associated with chronic acetaminophen use as well.

A recent case-control study of patients with end-stage renal disease suggested that long term consumption of acetaminophen may significantly increase the risk of end-stage renal disease particularly in patients taking more than two pills per day.


Hematologic side effects including rare cases of thrombocytopenia associated with acetaminophen have been reported. Methemoglobinemia with resulting cyanosis has also been observed in the setting of acute overdose.


Dermatologic side effects including erythematous skin rashes associated with acetaminophen have been reported rarely. Acetaminophen associated bullous erythema and purpura fulminans have also been reported.


Respiratory side effects including a case of acetaminophen-induced eosinophilic pneumonia have been reported.


Cardiovascular side effects including at least two cases of hypotension have been reported following the administration of acetaminophen.

Two cases hypotension have been reported following the administration of acetaminophen. Both patients experienced significant decreases in blood pressure. One of the two patients required pressor agents to maintain adequate mean arterial pressures. Neither episode was associated with symptoms of anaphylaxis. Neither patient was rechallenged after resolution of the initial episode.


1. Gursoy M, Haznedaroglu IC, Celik I, Sayinalp N, Ozcebe OI, Dundar SV "Agranulocytosis, plasmacytosis, and thrombocytosis followed by a leukemoid reaction due to acute acetaminophen toxicity." Ann Pharmacother 30 (1996): 762-5

2. Nelson EB, Temple AR "Acetaminophen hepatotoxicity, fasting, and ethanol." JAMA 274 (1995): 301

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

More about Nodolor (acetaminophen / dichloralphenazone / isometheptene mucate)

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