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- What is methotrexate, and how does it work (mechanism of action)?
- What brand names are available for methotrexate?
- Is methotrexate available as a generic drug?
- Do I need a prescription for methotrexate?
- What are the side effects of methotrexate?
- What is the dosage for methotrexate?
- Is methotrexate safe to take if I'm pregnant or breastfeeding?
- What else should I know about methotrexate?
What is methotrexate, and how does it work (mechanism of action)?
Methotrexate is classified as an antimetabolite drug which means it is capable of blocking the metabolism of cells. (Metabolism consists of the production and destruction of important components of the cell as well as the production of energy for use by the cell.) As a result of this effect, it has been found helpful in treating certain diseases associated with abnormally rapid cell growth, such as cancer of the breast and psoriasis. Recently, methotrexate has been shown to be effective in inducing miscarriage, for example in patients with ectopic pregnancy. This effect of methotrexate is attributed to its action of killing rapidly growing cells such as those of the placenta. It also has been found very helpful in treating rheumatoid arthritis, although its mechanism of action in this illness is not known. It seems to work, in part, by altering immunity which may play a role in causing rheumatoid arthritis. The FDA approved methotrexate in December 1953.
What brand names are available for methotrexate?
Is methotrexate available as a generic drug?
GENERIC AVAILABLE: Yes
Do I need a prescription for methotrexate?
What are the side effects of methotrexate?
Methotrexate can cause severe toxicity which usually is related to the dose taken. The most frequent reactions include:
- mouth sores,
- stomach upset;
- low white blood counts;
- severe toxicity of the liver, kidneys and bone marrow, which require regular monitoring with blood tests;
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