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Thioguanine Side Effects

Some of thioguanine's potential side effects include nausea, vomiting, and loss of appetite. This prescription chemotherapy drug is also associated with potentially serious reactions, such as infections, unusual bleeding, or vomiting blood. If you are taking this medicine, notify your healthcare provider right away if you develop anything that does not seem right.

An Introduction to Side Effects of Thioguanine

Just like any medicine, thioguanine (Tabloid®) can cause side effects. In fact, most people will experience some type of reaction to this drug, and some side effects can be quite significant. Talk to your healthcare provider about ways to prevent or lessen reactions to this medicine.
(This article covers many, but not all, of the possible side effects with thioguanine. Your healthcare provider can discuss a more complete list with you.)

Serious Thioguanine Side Effects

Some side effects of thioguanine are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
  • Signs of anemia, such as:
    • Unusual tiredness
    • Weakness
    • Pale skin
    • Shortness of breath
  • Unusual bleeding or bruising
  • Black, tarry, or bloody stools
  • Vomiting blood
  • Blood in the urine
  • Pinpoint red spots on the skin
  • Inflammation, irritation, or sores in the mouth or throat
  • Abdominal (stomach) pain, discomfort, or bloating
  • Diarrhea
  • Yellowing of the skin or whites of the eyes
  • Unexplained weight gain
  • Swelling of the lower legs or feet
  • Signs of an allergic reaction, such as:
    • An unexplained rash
    • Hives
    • Itching
    • Unexplained swelling, especially of the mouth, lips, or throat
    • Wheezing or difficulty breathing
    • Difficulty swallowing.
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Thioguanine Drug Information

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