Glycolog is a produced by Blackstone Labs, and it is marketed as a nutrient partitioner. The product claims to help improve the way your body handles carbohydrates by influencing insulin's actions. 
Here's a breakdown of the claims and how Glycolog is supposed to work:
Carbohydrates and Insulin: When you consume carbohydrates, your body releases insulin to help regulate blood sugar levels. Insulin can either facilitate the storage of these carbohydrates as fat or direct them into muscle cells for energy. 
Glycolog claims is allows individuals to include carbs in their diet without the fear of excess fat storage, as the product is purported to optimize the way insulin handles carbohydrates.

SUPPLEMENT FACTS
Serving Size 3 capsule(s)
Servings Per Container 60
Amount Per Serving
Chromium (as Chromium Polynicotinate) 300 mcg
10:1 Gymnema Leaf Extract (Gymnema Sylvestre) (Std. to 25% Gymnemic Acids) 1 g
Bitter Melon (Std. to 10% bitters) 500 mg
Super Berberine (Berberine-Cyclodextrin Complex) 300 mg
25:1 Cinnamon Bark Extract (Cinnamomum Cassia) (30% Polyphenols) 250 mg
Sodium R-Lipoate 150 mg
BioPerine (Black Pepper Fruit) (Extract) (Std. to 95% Piperine)
Other Ingredients: Magnesium Stearate, Silicon Dioxide