The pharmaceutical industry has come up with lots of chemotherapy drugs classified according to the chemical structure, the working principle and the possible associations with other medication. Most drugs are based on chemicals obtained from plants and this very origin or source leaves room to further classification. And, last but not least, one drug may be found in various categories as they may have several effects on the body of the patient. Doctors have a very precise duty of getting fully informed about chemotherapy drugs and know how to combine them or in what order to prescribe them to cancer patients.

A first category of chemotherapy drugs is the one relying on alkylating agents. These drugs have a very destructive effect on the bone marrow because they destroy the DNA to prevent the cancerous cells from reproduction. Lots of cancer cases get treated with this kind of chemotherapy drugs, with the mention that doses are always kept low because of the risk to develop leukemia up to ten years after the cessation of the treatment. The platinum based drugs are sometimes included in the same category because they act in a very similar manner against the disease.

Antimetabolites are another distinct class of chemotherapy drugs. They are used in treating leukemia, breast tumors, ovary and intestinal cancers and they also interfere not only with the DNA but also with the RNA.

The anthracyclines represent another variety of chemotherapy drugs included into the antibiotic group. Their action is directed against enzymes that help in DNA replication and they are encountered in a wide variety of cancer treatments.

The category of inhibitors comes next. The topoisomerase inhibitors separate and copy the DNA strands efficiently treating leukemia. With a more natural preponderance because of their herbal origin, mitotic inhibitors prevent the production of proteins necessary for the cancer cells growth. Even so, cancer patients undergo a huge risk with any chemical treatment they follow: these chemotherapy drugs may cause peripheral nerve damage to mention only one of the health threats you may fear.

Last but not least, the corticosteroids represent chemotherapy drugs based on hormones and designed to treat lymphoma, leukemia and myeloma besides other diseases. In addition to reducing the cancer cellular growth, they also have a positive impact on the way the body reacts to chemotherapy by preventing nausea, vomiting or other types of allergic reactions. These types of drugs may be used as chemotherapy ones or not, depending on the purpose they are supposed to serve.

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