<qa>  What is the dose of clofarabine?Each dose of clofarabine should be taken with 4 ounces of water in the morning, on an empty stomach. You must not eat or drink anything besides water from midnight the night before you take the study drug until 1 hour after taking the morning dose. You should take clofarabine every morning at about the same time. If vomiting occurs within 15 minutes of taking clofarabine, the dose may be repeated. If vomiting occurs more than 15 minutes after taking clofarabine, the dose cannot be replaced or made up. 