Dr Davis suggests these supplements and amounts in this post it is in relation to osteoporosis but his finding are also applicable to other conditions including obesity. Read also his blog posts on calcium and also omega 3. Once you are taking an EFFECTIVE amount of vitamin D3 (at least 5000iu/d and maybe depending on 25(OH)D test results up to 10,000iu/d) you will quadruple your calcium absorption and probably will NOT require a calcium supplement (in any case Dr Davis limits calcium to 600mg/d max)

I think we have all failed to take into account the role of Gut Microbiota and Its Possible Relationship With Obesity
The common denominator in obesity related conditions is inflammation and if we want to achieve a gut flora that isn't pro inflammatory we need to encourage survival of those gut flora that prefer an anti inflammatory environment so the removal of omega 6 industrial seed oils such as corn, soybean, safflower, sunflower and cottonseed oil and all the foods that contain them is essential if we are going to enable omega 3 to perform it's resolving inflammation role.
Changing to coconut oil as your main cooking oil will improve anti inflammatory status. Changing your main beverage to Green Tea will also help fight chronic inflammation.