Drawback of artesunate is :
**Core Concept**
Artesunate is a derivative of artemisinin, a compound isolated from the herb Artemisia annua. It is used in the treatment of malaria, particularly in severe cases. Artesunate works by generating free radicals that damage the malaria parasite's cell membranes and ultimately lead to its death.
**Why the Correct Answer is Right**
The major drawback of artesunate is its potential for causing hemolysis in patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency. This is because artesunate can induce oxidative stress, leading to the destruction of red blood cells. Patients with G6PD deficiency lack the enzyme that protects red blood cells from oxidative damage, making them more susceptible to hemolysis.
**Why Each Wrong Option is Incorrect**
**Option A:** While artesunate can cause anemia, it is not the primary drawback. Anemia is a potential side effect, but it is not as significant as the risk of hemolysis in G6PD deficient patients.
**Option B:** Artesunate does not typically cause liver toxicity, although it can cause gastrointestinal side effects like nausea and vomiting.
**Option C:** There is no significant evidence to suggest that artesunate is contraindicated in renal impairment. In fact, artesunate is often used in patients with severe malaria, including those with renal failure.
**Clinical Pearl / High-Yield Fact**
It is essential to screen patients for G6PD deficiency before administering artesunate, especially in areas where the deficiency is common. This can help prevent hemolysis and other complications associated with artesunate use.
**Correct Answer:** D.