Greetings! Clinical trials are used to evaluate the availability and effectiveness of anticancer drugs. These trials include testing drugs on patients to determine if they are safe and effective, such as acetyl l carnitine and alpha lipoic acid side effects https://www.dcaguide.org/dca-information/methods-and-supplements-for-preventing-dca-side-effects/. Key factors that determine the success of a drug include the ability to shrink or eliminate tumors, the duration of effect, and the side effects of the drug. Failed drugs often do not meet these criteria or show no significant improvement over existing treatments. Clinical trials are an important step in the process of developing new cancer treatments and improving patient outcomes.