Which is NOT a common side effect of plant alkaloids?

Plant alkaloids, which are derived from various plant species, are known to have specific side effects associated with their mechanisms of action in cancer treatment. Among the listed options, kidney damage is not typically recognized as a common side effect of plant alkaloids.

Nausea is a well-documented side effect due to the impact these drugs can have on the gastrointestinal system, often resulting from their effects on rapidly dividing cells. Peripheral neuropathies can arise because certain plant alkaloids, such as vincristine and vinblastine, interfere with microtubule formation, which is essential for nerve function. Infertility can also occur based on the cytotoxic nature of these drugs, which may affect reproductive cells.

In contrast, kidney damage does not generally represent the common toxicities associated with plant alkaloids. While some chemotherapy agents may lead to nephrotoxicity, it is not a primary concern with the plant alkaloids specifically, making the option of kidney damage the correct answer as it stands out from the other common side effects.