I used an all health/energy/mental concentrated juice product a couple years ago. It was a MLM also.

The product did give extra energy and I did feel better and my mental & cognitive seemed improved too.
But after 6 months I decided it wasn't so wonderful to offset the continued price tag.
I think it was a safe product to take, but just not really a super healing thing more of a system boost, and when you stopped you went back to where you had started at.

I just remembered the one I tried -
http://us.univera.com/products/xtra/agelessxtra


I found this suggestion on how to check out these kind of products -

[A. Get a list of the MOST critical ingredients in the MLM’s nutritional product and put them beside your computer. B. Go to the U.S. Government National Institutes of Health nutritional research website PUB MED. Go to Pub Med after you read the next two sentences! http://www.ncbi.nlm.nih.gov/sites/entrez

B. Look up the major ingredient(s) by entering its name in the search box . A very Good or some of the Best MLM - Network Marketing Companies may have sponsored a study.

C. Read through the scientific studies. Some may be complex, but the END sentence usually gives you a good idea if the study was a Plus or Minus for the product. Read over at least 10 articles use a piece of paper to keep track of studies like this Study #1 Good Study #2 good #3 What did they say? (or just What?) Study #4 Good Study #5 Bad. Make your own judgement if the product is Good or Blah!
]
http://www.mlmwatchdog.com/FIND_BEST...G_COMPANY.html