Methylene Blue (METH-i-leen BLOO)
Treats methemoglobinemia (a condition where your blood cannot carry oxygen properly, usually because you have been exposed to a certain drug or chemical).
There may be other brand names for this medicine.
When This Medicine Should Not Be Used
You should not receive this medicine if you have had an allergic reaction to methylene blue, or if you are pregnant.
How to Use This Medicine
- Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given through a needle placed in one of your veins.
- A nurse or other trained health professional will give you this medicine.
- This medicine must be given very slowly, so the needle will remain in place for several minutes.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Make sure your doctor knows if you are also using medicines to treat depression (such as amitriptyline, bupropion, citalopram, desipramine, duloxetine, escitalopram, fluoxetine, fluvoxamine, imipramine, nortriptyline, paroxetine, sertraline, venlafaxine, Aventyl®, Celexa®, Cymbalta®, Effexor®, Elavil®, Lexapro?, Luvox®, Norpramin®, Pamelor®, Paxil®, Prozac®, Tofranil®, Wellbutrin®, or Zoloft®), medicine to treat migraine headaches (such as eletriptan, sumatriptan, zolmitriptan, Imitrex®, Relpax®, or Zomig®), ergot medicine (such as ergotamine, Cafergot®, Ergomar®, or Wigraine®), or certain antibiotics (linezolid, Zyvox®).
Warnings While Using This Medicine
- Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
- Make sure your doctor knows if you are breastfeeding, or if you have kidney disease or a condition called glucose-6-phosphate dehydrogenase (G6PD) deficiency.
- Make sure your doctor knows about all the other medicines you are using. This medicine may cause a serious condition called serotonin syndrome when taken with certain medicines. Check with your doctor first before taking any other medicines. The symptoms of serotonin syndrome include mental changes (confusion, hyperactivity, memory problems), muscle twitching, excessive sweating, shivering or shaking, diarrhea, trouble with coordination, or fever.
- Make sure any doctor or dentist who treats you knows that you are using this medicine. This medicine may affect the results of certain medical tests.
- Your doctor will need to check your progress at regular visits while you are using this medicine. Be sure to keep all appointments. Blood tests may be needed to check for unwanted effects.
Possible Side Effects While Using This Medicine
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
- Chest pain.
- Severe shortness of breath.
If you notice these less serious side effects, talk with your doctor:
- Confusion or dizziness.
- Heavy sweating.
- Nausea or stomach pain.
If you notice other side effects that you think are caused by this medicine, tell your doctor
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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