The initial studies on DCI in PCOS used 1200 mg per day on obese women and showed good results, however, subsequent studies have used as little as 600 mg for lean women and as much as 3000 mg a day in divided doses. 
Current clinical results indicate that the most appropriate and effective dose is one tailored to the individual’s bodyweight, beginning at 20 mg per kilogram of bodyweight.
1 kg = 2.2 lbs
1 lb = 454 gm
If you know your weight in kilograms just multiply it by 20 to get your maximum therapeutic daily dose in milligrams.
To convert your weight in pounds to kilograms, divide your weight in pounds by 2.2.
If you are in the UK and using stones and ounces, I recommend www.onlineconversion.com It’s an excellent website and I use it frequently for many things.
My PCOS Info 