There is no history on this product to indicate if it is a good diet or not. It has only been on the market a few months.
In spite of the label - this product is NOT the original recipe for HPW.
The recipe for the Original HPW calls for Wombaroo High Protein Supplement which is a product made in Australia and imported to the US. The staple is prepared by blending the WHPS Powder with honey, eggs, bee pollen and water to make a nectar like staple that will provide the protein, vitamins and part of the calcium gliders need. Exotic Nutrition no longer sells this product and has come up with their own version called ZooPro High Protein Supplement in the last year or so.
If you would like to feed the Original HPW you can purchase the Wombaroo High Protein Supplement from the Pampered Glider
http://www.thepamperedglider.com/supplements.htm
The Recipe can be found here:
http://www.hpwdietcenter.com/original.html
Gliders can have a wide variety of fruits and vegetables - Do not feed Onions, Garlic, Leeks, Rhubarb or Chocolate.
Here is a list of fruits and vegetables that you can offer your gliders.
http://www.gliderkids-diet.com/FruitVegLIST2011.pdf