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  • Basic Info
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What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not improve in 1 week. If you also have a high fever, skin rash, continuing headache, or sore throat, see your doctor. You may develop tolerance to this medicine if you take it for a long time. Tolerance means that you will get less cough relief with time.

Do not suddenly stop taking your medicine because you may develop a severe reaction. Your body becomes used to the medicine. This does NOT mean you are addicted. Addiction is a behavior related to getting and using a drug for a non- medical reason. If your doctor wants you to stop the medicine, the dose will be slowly lowered over time to avoid any side effects.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.

The medicine will cause constipation. Try to have a bowel movement at least every 2 to 3 days. If you do not have a bowel movement for 3 days, call your doctor or health care professional.

This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • change in vision
  • chest pain, tightness
  • cold, clammy skin
  • confusion, anxiety, fear
  • difficulty passing urine
  • fainting
  • fast or irregular heartbeat
  • high or low blood pressure
  • slow or troubled breathing

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • constipation
  • dry eyes
  • dry mouth
  • headache
  • nausea, vomiting
  • stomach upset

               
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