Levall Side Effects

Generic Name: carbetapentane / guaifenesin / phenylephrine

Note: This page contains information about the side effects of carbetapentane / guaifenesin / phenylephrine. Some of the dosage forms included on this document may not apply to the brand name Levall.

For the Consumer

Applies to carbetapentane / guaifenesin / phenylephrine: sustained-release tablets

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

Diarrhea; dizziness; drowsiness; excitability; headache; irritability; nausea; stomach upset; trouble sleeping.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); difficulty urinating; fast, slow, or irregular heartbeat; fever; hallucinations; mental or mood changes (eg, anxiety, nervousness); paleness; seizures; severe or persistent dizziness, lightheadedness, or headache; tremor.

For Healthcare Professionals

Applies to carbetapentane / guaifenesin / phenylephrine: oral liquid, oral syrup, oral tablet, oral tablet extended release

Nervous system

Nervous system side effects have included nervousness, lightheadedness, excitability, restlessness, dizziness, tenseness, convulsions, CNS depression, and insomnia.^[Ref]

Cardiovascular

Cardiovascular side effects have included arrhythmias and hypotension with cardiovascular collapse.^[Ref]

Gastrointestinal

Gastrointestinal side effects have included nausea and vomiting.^[Ref]

Psychiatric

Psychiatric side effects have included fear, anxiety, and hallucinations.^[Ref]

Respiratory

Respiratory side effects have included respiratory difficulty.^[Ref]

Genitourinary

Genitourinary side effects have included dysuria.^[Ref]

General

General side effects have included weakness and pallor.^[Ref]

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

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