Methotrexate Rescue

Methotrexate Rescue General Information

The medical term Methotrexate can be abbreviated as MTX and defines a medical product; the former clinical term for this medication was amethopterin; this drug is a common antimetabolite remedy and also an antifolate medication which can be employed in the therapy of autoimmune medical conditions and in that of cancerous disorders. The use of this medication is to inhibit the normal metabolism of folic acid; this is one of the reasons for which this medication has effectively replaced a more powerful but very toxic antifolate medication called Aminopterin.

Methotrexate Rescue is a medical phrase that refers to the therapy options that are employed in the case of individuals who are suffering from over-exposure to this medical product. All patients who are prescribed a therapy course with Methotrexate should be trained on the importance of avoiding over-dosage with this pharmaceutical product, as such a clinical condition is a very severe complication which can even have a set of life threatening effects. Their main clinical prescribers should emphasize on the importance of following a pre-determined therapy schedule which should not be disrupted by any missed doses – this is the key to the success of the patient’s therapy course with this medication and with almost any other clinical remedy.  

Each patient should be well informed concerning the common clinical manifestations that characterize over-exposure to Methotrexate. In case you experience pale skin, unusual weakness, easy bruising, nausea, mouth sores, vomiting, coughing up blood, bloody stools, or if you are urinating less than normally or not urinating at all you should refer to the nearest emergency control center in order to be applied the needed Methotrexate Rescue techniques.

Methotrexate Rescue

Relative and / or absolute ingestion of a mega-dose of Methotrexate is known to result in acute toxicity (the clinical manifestations of this medical condition are mucosal ulceration, myelosuppression, and, in rare cases, cutaneous necrolysis); this clinical matter should be immediately dealt with through a special Methotrexate Rescue treatment option. The effects of such a condition on the patient’s metabolic system / processes can be repaired through the administration of folinic acid. The adequate dose of this substance which the patient will be administered intravenously depends on his or her levels of Methotrexate. After the individual’s serum levels of this medication are collected, the medical provider can calculate the needed amount of folinic acid.

Patients who present a severe form of hematological toxicity due to over-dosage with this medication should be immediately administered folinic acid – this is the main part of almost any Methotrexate Rescue therapy option. A therapy course with this substance can also be prescribed. In most cases, the initial dose which the patient is administered should not be less than 20 mg; however, the subsequent doses of folinic acid should be of 15 mg (in such cases the patient may start to use the oral form of this medical product) which are administered every 6 hours until the patient’s abnormal hematological levels of Methotrexate are corrected (this improvement generally occurs after 5-6 doses of this product).
 
Another important aspect of all Methotrexate Rescue measures aims to ensure that the patient benefits from a maximal renal elimination of the harmful substances. This can be sustained by the patient’s intensive consumption of liquids. In order to avoid the product’s ingredients from precipitating in the patient’s renal tubes, he or she should undergo alkalinisation of the urine (this clinical procedure requires the administration of sodium bicarbonate).

In case the patient presents delayed drug absorption or poor excretion of the medicine’s ingredients, his or her hematological levels of Methotrexate can remain abnormally and dangerously high for several days after the patient has been exposed to a mega dose of this product. He or she should remain under strict clinical observation and should be continuously treated with folinic acid until the medical practitioners are certain that the medication has been excreted from the patient’s organism. You should be able to acquire further professional information concerning Methotrexate Rescue from the nearest emergency center.

Methotrexate Rescue Treatment

The most common Methotrexate Rescue agent can be purchased under the brand name of Leucovorin. The use of this product is able to reduce the harmful effects of Methotrexate’s ingredients and those of other clinical products (you can ask your main medical prescriber or your local pharmacist to provide you with further information concerning the other potential uses of this medication). This product is a derivate from folic acid. While the use of Methotrexate and that of other medicines categorized as folic acid antagonists is known to block the organism’s production of folate, a therapy course with Leucovorin is effective in replacing the body’s needed amount of folate. Unfortunately, not all patients are allowed to benefit from a therapy course with this Methotrexate Rescue agent, as Leucovorin is associated with certain contra-indications. For example, individuals who are allergic to this product or who are suffering from a severe form of B12 vitamin deficiency which has lead to the development of anemia should consider an alternative therapeutic approach for their medical condition.

Furthermore, pharmaceutical studies have proven that Leucovorin can cause certain drug interactions. As a result, individuals who are being treated with this folic acid derivate should avoid the adjacent intake of Fluorouracil, as this medical combination is known to increase the patient’s risk of developing the unpleasant side effects of Fluorouracil (severe diarrhea, inflammation of the mouth, and so on). Also, the intake of Leucovorin is known to decrease the effectiveness of the patient’s use of drugs such as Trimethoprim-sulfamethoxazole, Phenobarbital, Pirimidone, Phenytoin, and so on. You should avoid missing your prescribed doses of this product. In case such a disruption occurs or if you vomit soon after ingesting a dose of Leucovorin, alert your medical specialist.