Calmylin Side Effects

Generic name: dextromethorphan

Medically reviewed by Drugs.com. Last updated on Sep 11, 2023.

Note: This document provides detailed information about Calmylin Side Effects associated with dextromethorphan. Some dosage forms listed on this page may not apply specifically to the brand name Calmylin.

Applies to dextromethorphan: oral capsule liquid filled, oral elixir, oral liquid, oral solution, oral suspension extended release, oral syrup, oral tablet.

Common side effects of Calmylin

Some side effects of dextromethorphan may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare side effects

• confusion
• constipation
• dizziness (mild)
• drowsiness (mild)
• headache
• nausea or vomiting
• stomach pain

Serious side effects of Calmylin

Along with its needed effects, dextromethorphan (the active ingredient contained in Calmylin) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking dextromethorphan:

Symptoms of overdose

• Blurred vision
• confusion
• difficulty in urination
• drowsiness or dizziness
• nausea or vomiting (severe)
• shakiness and unsteady walk
• slowed breathing
• unusual excitement, nervousness, restlessness, or irritability (severe)

For healthcare professionals

Applies to dextromethorphan: compounding powder, oral capsule, oral disintegrating strip, oral drops, oral liquid, oral lozenge, oral solution, oral suspension extended release, oral syrup, oral tablet chewable.

General adverse events

Adverse effects have included gastrointestinal disturbances such as stomach upset and diarrhea.^[Ref]

Nervous system

• Frequency not reported: Drowsiness, dizziness, convulsions^[Ref]

Respiratory

• Frequency not reported: Respiratory depression^[Ref]

Gastrointestinal

• Frequency not reported: Vomiting, nausea, diarrhea, abdominal pain, gastrointestinal disturbance^[Ref]

Hypersensitivity

• Rare (less than 0.1%): Fixed-drug eruptions^[Ref]

Psychiatric

• Frequency not reported: Mental confusion, excitation, insomnia, abuse^[Ref]

Cases of abuse have been reported.^[Ref]

Dermatologic

• Frequency not reported: Rash, angioedema, pruritus, urticaria^[Ref]

Frequently asked questions

• Does Mucinex help with Covid?
• Dextromethorphan - can you give TusQ Dx to a child and what is the dose?

Further information

Calmylin side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer