Quest Standardised Herbs 60 Tablets 200mg Green Coffee Extract. Green coffee inhibits an enzyme involved in the conversion of glycogen to glucose, thereby causing fat to be metabolised as a source of energy and not stored as body fat.

It is low in caffein, less than 2%, so will not raise the metabolic rate.

An individual's calorie need will vary depending on activity etc. Exercise is an important element in any weight loss plan.