no problem fightgood,
'final answer' , bouceback?
here's my opinion.
I posted the FDA's position/limitations/tips regarding dietary supplements in post #50 (link was provided) . The following deserves a re-post;
'FDA is not authorized to review dietary supplement products for safety and effectiveness before they are marketed. '
Therefore, if a person feels they need a dietary supplement care should be taken as to whom you're buying from. I wouldn't cut corners here.
Do you need a supplement? There's tremendous metabolic variability from person to person; we're all different. The answer is , therefore, very individualistic. En masse suggestions, such as 'everyone should take an omega 3 supplement to prevent cardiovascular disease' are erroneous . Your diet may be grossly rich in omega-3's, why the hell would you take more ?
if one suffers from chronic disease, there's value in ensuring your micornutrient (vit/minerals) intake is not low of a nutrient. As an example, people severely low on magnesium can manifest as fibromyagia,mood disorder. This would be valuable information in patient treatment. And yes , tests are available today that can determine levels of vit/minerals/ fatty acids/anti-oxidants...etc. This a core concept in functional medicine.