$AZT$ (azidothymindine) is used for helping .......victims.a. arthritis b. thalassemia c. AlDS d. tuberculosis

Sure, here are the step by step solutions: 1. Definition: - AZT is a nucleoside analogue reverse transcriptase inhibitor (NRTI) drug used for the treatment of HIV/AIDS infection. - It was the first breakthrough in AIDS therapy. 2. Mechanism of action: - AZT works by blocking the reverse transcriptase enzyme, which is necessary for HIV to replicate. - It mimics the structure of the nucleosides that the virus needs to make new DNA, but when the virus tries to use AZT, it can't complete the DNA chain. - This stops the virus from reproducing and lowers the amount of virus in the body. 3. Dosage and administration: - AZT is available in tablet, capsule, and syrup forms. - The dose and frequency of administration depends on factors such as the patient's weight, age, and overall health. - It is usually taken every 4 hours while awake, and the total daily dose is typically between 500-1500 mg. 4. Side effects: - Common side effects of AZT include nausea, vomiting, headache, dizziness, and fatigue. - It can also cause more serious side effects such as anemia, liver damage, and muscle weakness. - Patients should be closely monitored for these side effects and may need to have their dose adjusted or switch to a different medication if they occur. 5. Precautions and contraindications: - AZT should not be used in patients with severe liver disease or bone marrow suppression. - It may interact with other medications, so patients should inform their doctor of all medications and supplements they are taking. - Pregnant women should also use AZT with caution, as it can cross the placenta and affect the developing fetus. 6. Conclusion: - AZT is an important medication for the treatment of HIV/AIDS infection. - Patients should be aware of the potential side effects and should work closely with their healthcare provider to monitor their condition and adjust their treatment plan as needed.