Skip to Content

KG-Fed Side Effects

Generic Name: codeine / pseudoephedrine

Note: This page contains information about the side effects of codeine / pseudoephedrine. Some of the dosage forms included on this document may not apply to the brand name KG-Fed.

For the Consumer

Applies to codeine / pseudoephedrine: capsules

Other dosage forms:

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

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 codeine / pseudoephedrine:

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast or irregular heartbeat; hallucinations; seizures; severe dizziness, lightheadedness, or headache; severe drowsiness; tremor.

For Healthcare Professionals

Applies to codeine / pseudoephedrine: oral capsule, oral liquid, oral syrup

General

The more commonly reported adverse effects have included nausea, vomiting, and dizziness.[Ref]

Respiratory

Codeine:
Frequency not reported: Respiratory depression[Ref]

Respiratory depression has been associated with antitussive use of codeine in young children. Respiratory depression and death have occurred in children who received codeine in the postoperative period following tonsillectomy and/or adenoidectomy. Further investigation has shown these patients to be ultra-rapid metabolizers of codeine. Children with obstructive sleep apnea who are treated with codeine appear to be particularly sensitive to the respiratory depressant effects of codeine.[Ref]

Nervous system

Codeine
Frequency not reported: CNS depression, lightheadedness, dizziness, sedation, headache, convulsions, weakness

Pseudoephedrine:
Frequency not reported: Restlessness, dizziness, weakness, headache, drowsiness, tremor[Ref]

Gastrointestinal

Patients with chronic ulcerative colitis may experience increased colonic motility, while patients with acute ulcerative colitis have experienced toxic dilation with codeine use.[Ref]

Codeine
Frequency not reported: Nausea, vomiting, constipation, biliary tract spasm, increased colonic motility, toxic dilation

Pseudoephedrine:
Frequency not reported: Nausea, vomiting, dry mouth[Ref]

Psychiatric

Codeine
Frequency not reported: Euphoria, dysphoria, transient hallucination, disorientation

Pseudoephedrine:
Frequency not reported: Hallucinations (particularly in children), anxiety, excitability, insomnia[Ref]

Cardiovascular

Codeine
Frequency not reported: Tachycardia, bradycardia, palpitation, faintness, syncope, orthostatic hypotension, circulatory depression

Pseudoephedrine:
Frequency not reported: Tachycardia, palpitations, cardiac arrhythmias, hypertension, impaired circulation to the extremities[Ref]

Dermatologic

Codeine:
Frequency not reported: Rash

Pseudoephedrine:
Frequency not reported: Fixed drug eruption in the form of erythematous nodular patches, rash[Ref]

Genitourinary

Codeine
Frequency not reported: Oliguria, urinary retention, antidiuretic effect

Pseudoephedrine:
Frequency not reported: Urinary retention[Ref]

Hypersensitivity

Codeine
Frequency not reported: Pruritus, giant urticaria, angioneurotic edema, laryngeal edema[Ref]

Ocular

Codeine
Frequency not reported: Visual disturbances

Pseudoephedrine:
Frequency not reported: Angle-closure glaucoma[Ref]

References

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

2. Cerner Multum, Inc. "Australian Product Information." O 0

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

More about KG-Fed (codeine / pseudoephedrine)

Consumer resources

Other brands: Notuss-DC, Nucofed, EndaCof-DC, Codar D

Professional resources

Related treatment guides

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

Hide