HYDROXYUREA

Hydroxyurea is an anticancer medication containing hydroxyurea as its active ingredient. It is used to treat chronic myeloid leukaemia (cancer of white blood cells) and polycythaemia vera (cancer of red blood cells). The medication works by slowing the growth and division of cancer cells. In sickle cell anaemia, it reduces the frequency and severity of painful episodes and helps prevent organ damage. Hydroxyurea is also used to treat cervical, ovarian, melanoma (skin cancer), and head and neck cancers. Cancer is a disorder characterised by uncontrolled and abnormal cell multiplication. Hydroxyurea received approval from the United States Food and Drug Administration (FDA) in 1967 for treating certain types of cancer, including chronic myelogenous leukaemia and certain types of skin cancer. Its clinical applications have expanded over subsequent years to include treatment of additional conditions.

Hydroxyurea is a medication that has been approved for the treatment of various medical conditions. These include ovarian cancer, polycythemia vera, chronic myeloid leukemia, cervical cancer, head and neck cancer, and sickle cell anemia.

Hydroxyurea should be taken exactly as prescribed by a healthcare provider. It is typically taken orally as a capsule or tablet, once daily or as directed by the healthcare provider. The medication should be taken with a full glass of water and can be taken with or without food, depending on the individual's preference and tolerability. If a dose is missed, it should be taken as soon as possible unless it is close to the time for the next scheduled dose. In that case, the missed dose should be skipped, and the regular dosing schedule should be resumed. It is important not to take a double dose to make up for a missed dose.

Hydroxyurea can cause various side effects, ranging from mild to serious. Common side effects may include fatigue, nausea, vomiting, loss of appetite, and mouth sores. It can also cause changes in blood counts, such as a decrease in white blood cells, red blood cells, and platelets. This can increase the risk of infection, anemia, and bleeding. In addition, it may cause skin rash, itching, and skin darkening. More serious side effects, such as severe skin reactions, lung toxicity, and liver toxicity, can occur.

Hydroxyurea comes with several warnings, which should be considered before starting treatment. The medication can cause serious side effects, such as lung toxicity, liver toxicity, and severe skin reactions, including Stevens-Johnson syndrome and toxic epidermal necrolysis. Additionally, there is a risk of developing secondary cancers, such as leukemia, with long-term use of it. It can also lower blood counts, increasing the risk of infection, anemia, and bleeding.

Several precautions should be considered before taking hydroxyurea. It is important to monitor blood counts regularly while taking it. Effective contraception should be used during treatment to avoid the risk of harm to a developing fetus. You should inform your healthcare provider of all medications and supplements you are taking before starting treatment. You should avoid radiation exposure and take precautions to prevent infection while taking this medication, as the medication can suppress the immune system. Finally, this medication should be used cautiously in patients with liver or kidney problems, as it can cause liver or kidney toxicity.

Hydroxyurea is a medication associated with potentially serious side effects. Adherence to your healthcare provider's instructions for administration and prompt reporting of any adverse effects or health changes is essential. Women taking oral contraceptives should inform their doctor before commencing treatment. If you are a woman of childbearing potential, effective contraception must be used during treatment and for at least three months following the final dose. Inform your doctor of any history of liver, lung, or kidney disease before taking this medication. Sun protection is recommended during treatment. Patients undergoing cancer treatment are advised to consume a diet rich in fruits, vegetables, whole grains, and lean proteins whilst limiting processed and high-fat foods. Adequate water intake and hydration are also important.

Bristol-Myers Squibb Pharmaceuticals Unlimited Company, Electronic medicines compendium (EMC), [Revised on August 2021] [ Accessed on 17 April 2023], https://www.medicines.org.uk/emc/files/pil.271.pdf Bristol-Myers Squibb Company, US Food and Drug Administration, [Revised on March 2016] [ Accessed on 17th April 2023], https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/016295Orig1s047,s048Lbl.pdf Goodman & Gilman’s, The Pharmacological Basis of Therapeutics, Cytotoxic agents, 12th edition, 2011, 1721. KD Tripathi, Essentials of Medical Pharmacology, Anticancer drugs, 7th edition, 2013, 868. Rohit Kumar Agarwal et al; Hydroxyurea in Sickle Cell Disease: Drug Review; Indian Journal of Hematology & Blood Transfusion; Published on June 2014; Accessed on 17 April 2023; https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4022916/#__ffn_sectitle