I have a AST level of 50. My GP seemed very concerned and has referred me to a liver specialist. I drink moderately and have no symptoms. I have recently lost 35 pounds (I am now 5'8" and 205lbs....I was 240 lbs) after being 240 lbs for about 10 years. Little to no physical activity during that time. But over the past year I have joined a gym, and started eating very healthy. how long would it take to lower AST to under 40 if I quit drinking entirely and started taking vitimins like milk thistle?