Before taking this product, tell your doctor or pharmacist if you are allergic to any of its ingredients; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
If you have any of the following health problems, consult your doctor or pharmacist before using this medication:
- breathing problems (such as asthma, emphysema)
- heart problems
- high blood pressure
- kidney problems
- liver disease
- stomach/intestinal problems (such as blockage, constipation, ulcers)
- overactive thyroid (hyperthyroidism)
- urination problems (such as trouble urinating due to enlarged prostate, urinary retention)
This drug may make you dizzy or drowsy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Avoid alcoholic beverages.
Acetaminophen may cause liver damage. Daily use of alcohol and acetaminophen may increase your risk. Avoid alcoholic beverages.
Some brands of this product may contain sugar, alcohol, or aspartame. Caution is advised if you have diabetes, alcohol dependence, liver disease, phenylketonuria (PKU), or any other condition that requires you to limit/avoid these substances in your diet. Ask your doctor or pharmacist about using this product safely.
Before having surgery, tell your doctor or dentist that you are taking this medication.
Children may be more sensitive to the effects of this drug. In young children, antihistamines may cause agitation/excitement instead of drowsiness.
Older adults may be more sensitive to the effects of this drug, especially dizziness, drowsiness, mental/mood changes, and blood pressure changes.
During the first 6 months of pregnancy, this medication should be used only if clearly needed. It should not be used during the last 3 months of pregnancy since antihistamines may increase the risk of serious side effects (such as seizures) in a newborn baby. Discuss the risks and benefits with your doctor.
This medication may pass into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breast-feeding.
Drowsiness, dizziness, blurred vision, upset stomach, nausea, nervousness, or dry mouth/nose/throat may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur:
- mental/mood changes (such as confusion, hallucinations)
- trouble urinating
Tell your doctor immediately if any of these rare but serious side effects occur:
- fast/slow/irregular heartbeat
Taking more than the recommended dose of acetaminophen may cause serious (possibly fatal) liver disease. Seek immediate medical attention if you have any symptoms of liver damage:
- dark urine
- persistent nausea/vomiting
- stomach/abdominal pain
- yellowing eyes/skin
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.