This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Toxicity of cycloserine is enhanced by- 
Select and explain. 
A. Toxicity of cycloserine is enhanced by-, B. Amphotericine-B, C. Simvastatin, D. Alcohol
D: Alcohol
Answer: D: Alcohol 
Explanation: Ans. is 'd' i.e., Alcohol o Reactions to cycloserine most commonly involve the CNS Somnolence, headache, tremor, dysahria, veigo, confusion, nervousness, irritability, psychotic state, suicidal tendencies, paranoid reactions, ankle clonus, hyperreflexia, visual disturbances, seizures. o Large doses of cycloserine or the concomitant ingestion of alcohol increases the risk of seizures. o Cycloserine acts by inhibiting cell wall synthesis.