What should I tell my care team before I take this medication?
They need to know if you have any of these conditions:
- Brain tumor
- Diabetes
- Frequently drink alcohol
- Head injury
- Heart disease
- High blood pressure
- Kidney disease
- Liver disease
- Lung disease or breathing disease, such as asthma or COPD
- Prostate disease
- Seizures
- Stomach or intestine problems
- Substance use disorder
- Taken an MAOI, such as Marplan, Nardil, or Parnate in last 14 days
- Thyroid disease
- An unusual or allergic reaction to codeine, guaifenesin, pseudoephedrine, other medications, foods, dyes, or preservatives
- Pregnant or trying to get pregnant
- Breastfeeding
What may interact with this medication?
Do not take this medication with any of the following:
- Linezolid
- MAOIs, such as Marplan, Nardil, and Parnate
- Methylene blue
- Ozanimod
This medication may also interact with the following:
- Alcohol
- Antihistamines for allergy, cough, and cold
- Certain medications for anxiety or sleep
- Certain medications for depression, such as amitriptyline, fluoxetine, or sertraline
- Certain medications for seizures, such as phenobarbital or primidone
- General anesthetics, such as halothane, isoflurane, methoxyflurane, propofol
- Medications that relax muscles for surgery
- Opioids for pain
- Phenothiazines, such as chlorpromazine, mesoridazine, prochlorperazine, or thioridazine
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medication?
You may develop tolerance to this medication if you take it for a long time. Tolerance means that you will get less symptom relief with time. Tell your care team if your symptoms do not start to get better or if they get worse.
Taking this medication with other substances that cause drowsiness, such as alcohol, benzodiazepines, or other opioids can cause serious side effects. Give your care team a list of all medications you use. They will tell you how much medication to take. Do not take more medication than directed. Call emergency services if you have problems breathing or staying awake.
Long term use of this medication may cause your brain and body to depend on it. This can happen even when used as directed by your care team. You and your care team will work together to determine how long you will need to take this medication. If your care team wants you to stop this medication, the dose will be slowly lowered over time to reduce the risk of side effects.
This medication may affect your coordination, reaction time, or judgment. Do not drive or operate machinery until you know how this medication affects you. Sit up or stand slowly to reduce the risk of dizzy or fainting spells. Drinking alcohol with this medication can increase the risk of these side effects.
This medication will cause constipation. If you do not have a bowel movement for 3 days, call your care team.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy and drinking plenty of water may help. Contact your care team if the problem does not go away or is severe.
Talk to your care team if you may be pregnant. Prolonged use of this medication during pregnancy can cause temporary withdrawal in a newborn.
Talk to your care team before breastfeeding. Changes to your treatment plan may be needed. If you breastfeed while taking this medication, seek medical care right away if you notice the child has slow or noisy breathing, is unusually sleepy or not able to wake up, or is limp.
Long-term use of this medication may cause infertility. Talk to your care team if you are concerned about your fertility.