Neo-Synephrine Side Effects

Generic Name: phenylephrine hydrochloride

Please note - some side effects for Neo-Synephrine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Side Effects of Neo-Synephrine - for the Consumer

Neo-Synephrine

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Neo-Synephrine:

Excitability; headache; nausea; restlessness; vomiting.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; convulsions; dizziness; irregular heartbeats; mental or mood changes; pain or redness at the injection site; shortness of breath; tingling or numb hands/feet.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

Neo-Synephrine Solution

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Neo-Synephrine Solution:

Burning or stinging in nose; dizziness; headache; increased discharge from nose; sneezing.

Severe allergic reactions (rash; hives; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue).

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

Side Effects by Body System - for Healthcare Professionals

Nervous system

Nervous system side effects have included headache, dizziness, nervousness, restlessness, tremor, insomnia, convulsions, and central nervous system depression.

Cardiovascular

Cardiovascular side effects have included palpitations, arrhythmias, and cardiovascular collapse with hypotension.

Psychiatric

Psychiatric side effects have included hallucinations, fear, and anxiety.

Gastrointestinal

Gastrointestinal side effects have included nausea.

Respiratory

Respiratory side effects have included respiratory difficulty.

Genitourinary

Genitourinary side effects have included dysuria.

General

General side effects have included pallor and weakness.

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