Theraflu Thin Strips Cough Side Effects

Generic Name: dextromethorphan

Note: This page contains side effects data for the generic drug dextromethorphan. It is possible that some of the dosage forms included below may not apply to the brand name Theraflu Thin Strips Cough.

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

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

As well as its needed effects, dextromethorphan (the active ingredient contained in Theraflu Thin Strips Cough) may cause unwanted side effects that require medical attention.

If any of the following side effects occur while taking dextromethorphan, check with your doctor or nurse as soon as possible:

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 dextromethorphan 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:

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

Nervous system

Nervous system side effects have included drowsiness and dizziness. Other side effects such as excitation, mental confusion, and opioid like respiratory depression have been rare and occurred at higher dosages. In some cases of abuse, patients experienced euphoria, hyperactivity, mania, and auditory and visual hallucinations.[Ref]

Gastrointestinal

Gastrointestinal side effects have included stomach upset.[Ref]

Hypersensitivity

Hypersensitivity side effects have included rare reports of fixed-drug eruptions.[Ref]

References

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

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

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

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

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

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

7. Covington TR, Lawson LC, Young LL, eds. "Handbook of Nonprescription Drugs. 10th ed." Washington, DC: American Pharmaceutical Association (1993):

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

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