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Karbinal ER
Generic name: carbinoxamine
Brand names: Karbinal ER, Ryvent
What is Karbinal ER?
Karbinal ER is an antihistamine used to relieve runny or stuffy nose, sneezing, itching, watery eyes, hives, skin rash, itching, and other allergy symptoms.
Karbinal ER is intended for adults and children who are at least 2 years old.
Karbinal ER may also be used for reasons not mentioned in this medication guide.
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How should I take Karbinal ER?
Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.
Follow all directions when giving Karbinal ER to a child. Do not use the medicine to make a child sleepy. Misuse of this medicine may cause death in very young children.
Shake the oral suspension (liquid). Measure a dose with the supplied syringe or a dose-measuring device (not a kitchen spoon).
Call your doctor if your symptoms do not improve, or if they get worse.
Store at room temperature away from moisture, heat, and light.
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Warnings
Use only as directed. Inform your doctor if you are taking other medicines, have other medical conditions, or have allergies.
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Before taking this medicine
You should not use Karbinal ER if you are allergic to it.
Do not use Karbinal ER if you are also taking an MAO inhibitor such as isocarboxazid, linezolid, methylene blue injection, phenelzine, or tranylcypromine.
Not approved for use by anyone younger than 2 years old.
Tell your doctor if you have ever had:
- glaucoma;
- a stomach ulcer;
- a blockage in your digestive tract (stomach or intestines);
- a thyroid disorder;
- heart problems, high blood pressure;
- liver or kidney disease;
- asthma or sulfite allergy;
- an enlarged prostate;
- urination problems; or
- low blood pressure.
You should not breastfeed while using Karbinal ER.
Tell your doctor if you are pregnant.
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Karbinal ER side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Karbinal ER may cause serious side effects. Stop using Karbinal ER and call your doctor right away if you have:
- a light-headed feeling, like you might pass out;
- little or no urination;
- wheezing, tightness in your chest;
- pounding heartbeats or fluttering in your chest; or
- pale skin, easy bruising, or bleeding.
Side effects like dizziness and confusion may be more likely in older adults.
Common side effects of Karbinal ER may include:
- dry mouth, nose, or throat;
- drowsiness, dizziness;
- loss of coordination; or
- upset stomach.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
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What happens if I miss a dose?
Karbinal ER is used as needed. If you have a dosing schedule and miss a dose, skip it. Do not take two doses at once.
This section was rewritten for readability and reviewed for meaning.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose can be fatal, especially for a child.
Overdose symptoms may include extreme drowsiness or feeling restless, hallucinations, dilated pupils, or seizures (convulsions).
Avoid driving or doing anything dangerous until you know how Karbinal ER will affect you. Your reactions could be impaired.
Avoid drinking alcohol.
Ask a doctor or pharmacist before using other cough or cold medicines that may have similar ingredients.
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What other drugs will affect Karbinal ER?
Ask a doctor or pharmacist before using any other medicines that can cause drowsiness (such as opioid medication, sleep medicine, a muscle relaxer, or medicine for anxiety or seizures). Tell your doctor about all other medicines you use. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here.
This section was rewritten for readability and reviewed for meaning.
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Content is provided for education and is not medical advice. See our medical disclaimer.