Monte-G HC Side Effects

Generic Name: guaifenesin / hydrocodone

Note: This page contains information about the side effects of guaifenesin / hydrocodone. Some of the dosage forms included on this document may not apply to the brand name Monte-G HC.

Not all side effects for Monte-G HC may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to guaifenesin / hydrocodone: liquid, sustained-release tablets, syrup, tablets

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; dizziness; drowsiness; excitability; headache; nausea; nervousness or anxiety; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur while taking guaifenesin / hydrocodone:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); anxiety; change in amount of urine; difficulty urinating; hearing change or loss; mental or mood changes; severe drowsiness.

For Healthcare Professionals

Applies to guaifenesin / hydrocodone: oral capsule, oral liquid, oral syrup, oral tablet, oral tablet extended release

Nervous system

One study has suggested that the respiratory depression caused by hydrocodone may be of benefit in the treatment of dyspnea related to chronic obstructive pulmonary disease and restrictive lung disease. However, the potential for the precipitation of respiratory insufficiency makes such use of hydrocodone hazardous and such use should be undertaken, if at all, only with extreme caution.[Ref]

Nervous system side effects of guaifenesin have included dizziness and headache. Central nervous system adverse effects of hydrocodone have included mental depression, dizziness, lightheadedness, respiratory depression (which is sometimes fatal), stupor, delirium, somnolence, agitation, and dysphoria.[Ref]

Other

Other side effects of hydrocodone have included withdrawal symptoms, such as agitation, restlessness, anxiety, insomnia, tremor, abdominal cramps, blurred vision, vomiting and sweating, after either abrupt cessation or fast tapering of narcotic analgesics.[Ref]

Gastrointestinal

Gastrointestinal side effects of guaifenesin have included upset stomach and vomiting with higher than recommended doses. Doses recommended for expectoration are rarely associated with gastrointestinal upset. Gastrointestinal side effects of hydrocodone have included nausea, vomiting, constipation, and dry mouth.[Ref]

Genitourinary

Genitourinary side effects of hydrocodone have included ureteral spasm, spasm of vesicle sphincters, and urinary retention.[Ref]

Dermatologic

Dermatologic side effects of guaifenesin have included rash. Narcotic-induced rash has also been reported.[Ref]

References

1. Turturro MA, Paris PM, Yealy DM, Menegazzi JJ "Hydrocodone versus codeine in acute musculoskeletal pain." Ann Emerg Med 20 (1991): 1100-3

2. Morrow PL, Faris EC "Death associated with inadvertent hydrocodone overdose in a child with a respiratory tract infection." Am J Forensic Med Pathol 8 (1987): 60-3

3. Sackner MA "Effects of hydrocodone bitartrate on breathing pattern of patients with chronic obstructive pulmonary disease and restrictive lung disease." Mt Sinai J Med 51 (1984): 222-6

4. Fricke J, Halladay SC, Bynum L, Francisco CA "Pain relief after dental impaction surgery using ketorolac, hydrocodone plus acetaminophen, or placebo." Clin Ther 15 (1993): 500-9

5. "Product Information. Vicodin Tuss (guaifenesin-hydrocodone)" Knoll Pharmaceutical Company, Mount Olive, NJ.

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

7. "Product Information. Robitussin (guaifenesin)." Wyeth-Ayerst Laboratories, Philadelphia, PA.

8. Cohen J, Tattersfield H, Lloyd D, Cantopher T "A request for a strong analgesic." Practitioner 234 (1990): 691-4

9. Sorensen JL, Hargreaves WA, Weinberg JA "Heroin addict responses to six weeks of detoxification with LAAM." Drug Alcohol Depend 9 (1982): 79-87

10. Morrison AB "Toxicity and abuse of hydrocodone bitartrate." Can Med Assoc J 120 (1979): 1338

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