Calmylin Side Effects
Generic name: dextromethorphan
Medically reviewed by Drugs.com. Last updated on Sep 11, 2023.
Note: This document contains side effect information about dextromethorphan. Some dosage forms listed on this page may not apply 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.
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
- difficulty in urination
- drowsiness or dizziness
- nausea or vomiting (severe)
- shakiness and unsteady walk
- slowed breathing
- unusual excitement, nervousness, restlessness, or irritability (severe)
Other 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
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.
Frequency not reported: Drowsiness, dizziness, convulsions[Ref]
Frequency not reported: Vomiting, nausea, diarrhea, abdominal pain, gastrointestinal disturbance[Ref]
Rare (less than 0.1%): Fixed-drug eruptions[Ref]
Cases of abuse have been reported.[Ref]
Frequently asked questions
- Does Mucinex help with Covid?
- Dextromethorphan - can you give TusQ Dx to a child and what is the dose?
More about Calmylin (dextromethorphan)
- Check interactions
- Compare alternatives
- Dosage information
- During pregnancy
- Drug class: antitussives
Related treatment guides
1. Cerner Multum, Inc. UK Summary of Product Characteristics.
2. Hall RC, Beresford TP, Stickney SK, Nasdahl CS, Coleman JH. Psychiatric reactions produced by respiratory drugs. Psychosomatics. 1985;26:605-8,616-7.
3. Helfer J, Kim OM. Psychoactive abuse potential of Robitussin-DM. Am J Psychiatry. 1990;147:672-3.
4. Murray S, Brewerton T. Abuse of over-the-counter dextromethorphan by teenagers. South Med J. 1993;86:1151-3.
5. Wolfe TR, Caravati EM. Massive dextromethorphan ingestion and abuse. Am J Emerg Med. 1995;13:174-6.
6. Polles A, Griffith JL. Dextromethorphan-induced mania. Psychosomatics. 1996;37:71-4.
7. Bostwick JM. Dextromethorphan-induced manic symptoms in a bipolar patient on lithium. Psychosomatics. 1996;37:571-2.
8. Stubb S, Reitamo S. Fixed-drug eruption due to dextromethorphan . Arch Dermatol. 1990;126:970-1.
9. Knowles SR, Weber E. Dextromethorphan anaphylaxis. J Allerg Clin Immunol. 1998;102:316-7.
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.