Sit or stand upright for 10 minutes after taking the medicine. Do not lie down.
Swallow with a full glass (8 oz) of water unless your doctor gives you different instructions.
This medicine will work best if you take it at about the same time every day.
Store at room temperature away from heat, light, and moisture. Do not keep in the bathroom.
Please ask your doctor, nurse, or pharmacist how to discard unused medicines safely.
Avoid grapefruit juice while on this medicine.
It is important that you keep taking each dose of this medicine on time even if you are feeling well.
If you forget to take a dose on time, take it as soon as you remember. If it is almost time for the next dose, do not take the missed dose. Return to your normal schedule. Do not take 2 doses at one time.
Drug interactions can change how medicines work or increase risk for side effects. Tell your health care providers about all medicines taken. Include prescription and over-the-counter medicines, vitamins, and herbal medicines. Speak with your doctor or pharmacist before starting or stopping any medicine.
Tell your doctor if symptoms do not get better or if they get worse.
Keep all appointments for medical exams and tests while on this medicine.
Tell your doctor and pharmacist if you ever had an allergic reaction to a medicine.
Some patients with weak hearts may have worsening of symptoms. If you notice difficulty breathing, weight gain, or swelling of your legs or ankles, let your doctor know right away.
This medicine is associated with a rare but very serious medical condition. Please speak with your doctor about symptoms you should look out for while on this medicine. Notify your doctor immediately if you develop those symptoms.
Some patients taking this medicine have experienced serious side effects. Please speak with your doctor to understand the risks and benefits associated with this medicine.
This medicine is associated with an increased risk of serious heart problems and heart attack. Please speak with your doctor about the risks and benefits of using this medicine. Contact your doctor immediately if you experience chest pain or difficulty breathing.
Do not use the medication any more than instructed.
If possible, avoid using with marijuana or other medicines that can cause dizziness or drowsiness. These include allergy/cold products, muscle relaxers, sleep aids, and pain relievers.
Your ability to stay alert or to react quickly may be impaired by this medicine. Do not drive or operate machinery until you know how this medicine will affect you.
Please check with your doctor before drinking alcohol while on this medicine.
Contact your doctor if you notice a change in the amount or darkening of your urine.
Call the doctor if there are any signs of confusion or unusual changes in behavior.
Tell the doctor or pharmacist if you are pregnant, planning to be pregnant, or breastfeeding.
Do not take St. John's wort while on this medicine.
Call your doctor right away if you notice any unusual bleeding or bruising.
Do not share this medicine with anyone who has not been prescribed this medicine.
Information about Dextromethorphan/Quinidine Oral Capsule (DEXTROMETHORPHAN/QUINIDINE - ORAL)
The following is a list of some common side effects from this medicine. Please speak with your doctor about what you should do if you experience these or other side effects.
coughing
diarrhea
dizziness or drowsiness
swelling of the legs, feet, and hands
vomiting
weakness
Call your doctor or get medical help right away if you notice any of these more serious side effects:
agitated feeling or trouble sleeping
loss of balance
increased risk of bruising and bleeding
confusion
fainting
fever or chills
hallucinations (unusual thoughts, seeing or hearing things that are not real)
fast or irregular heart beats
signs of liver damage (such as yellowing of eye or skin, dark urine, or unusual tiredness)
muscle aches, spasms or abnormal movements
joint or muscle pain
restlessness
sore throat
dark urine
A few people may have an allergic reaction to this medicine. Symptoms can include difficulty breathing, skin rash, itching, swelling, or severe dizziness. If you notice any of these symptoms, seek medical help quickly.
Please speak with your doctor, nurse, or pharmacist if you have any questions about this medicine.
IMPORTANT NOTE: This document tells you briefly how to take your medicine, but it does not tell you all there is to know about it. Your doctor or pharmacist may give you other documents about your medicine. Please talk to them if you have any questions. Always follow their advice.
There is a more complete description of this medicine available in English. Scan this code on your smartphone or tablet or use the web address below. You can also ask your pharmacist for a printout. If you have any questions, please ask your pharmacist.
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Conditions of Use: The information in this database is intended to supplement, not substitute for the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment. The display and use of this drug information is subject to express Terms of Use.
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