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Tussin Cough Gels (Long Acting) Side Effects

Generic Name: dextromethorphan

Note: This document contains side effect information about dextromethorphan. Some of the dosage forms listed on this page may not apply to the brand name Tussin Cough Gels (Long Acting).

For the Consumer

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

Along with its needed effects, dextromethorphan (the active ingredient contained in Tussin Cough Gels (Long Acting)) 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)

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

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 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

Cases of abuse have been reported.[Ref]

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

Dermatologic

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

References

1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. Murray S, Brewerton T "Abuse of over-the-counter dextromethorphan by teenagers." South Med J 86 (1993): 1151-3

3. Bostwick JM "Dextromethorphan-induced manic symptoms in a bipolar patient on lithium." Psychosomatics 37 (1996): 571-2

4. Polles A, Griffith JL "Dextromethorphan-induced mania." Psychosomatics 37 (1996): 71-4

5. Wolfe TR, Caravati EM "Massive dextromethorphan ingestion and abuse." Am J Emerg Med 13 (1995): 174-6

6. Helfer J, Kim OM "Psychoactive abuse potential of Robitussin-DM." Am J Psychiatry 147 (1990): 672-3

7. Hall RC, Beresford TP, Stickney SK, Nasdahl CS, Coleman JH "Psychiatric reactions produced by respiratory drugs." Psychosomatics 26 (1985): 605-8,616-7

8. Stubb S, Reitamo S "Fixed-drug eruption due to dextromethorphan ." Arch Dermatol 126 (1990): 970-1

9. Knowles SR, Weber E "Dextromethorphan anaphylaxis." J Allerg Clin Immunol 102 (1998): 316-7

Some side effects of Tussin Cough Gels (Long Acting) may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

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