Final answer:
INH can cause peripheral neuritis due to its interference with the metabolism and absorption of vitamin B6, which is essential for proper nerve function.
Step-by-step explanation:
INH, which stands for isonicotinic acid hydrazide, can cause peripheral neuritis. Peripheral neuritis refers to the inflammation of the peripheral nerves, which connect the brain and spinal cord to the rest of the body. This side effect is observed in some individuals who take INH as a treatment for tuberculosis.
One possible explanation for this side effect is that INH can interfere with the metabolism and absorption of vitamin B6, also known as pyridoxine. Vitamin B6 is essential for maintaining proper nerve function. Therefore, a deficiency in vitamin B6 caused by INH can lead to peripheral neuritis.