Irwin Naturals CLA Lean is formulated to support fitness, muscle gain, and weight loss, primarily through its Conjugated Linoleic Acid (CLA) content. Each serving provides 1700mg of CLA, which is a decent amount, though many studies demonstrating benefits often utilize daily dosages of 3200mg (3.2g) or more, suggesting that two servings of this product would likely be needed daily to reach that level. A notable positive is the inclusion of BioPerine Complex, which is known to enhance the bioavailability and absorption of various nutrients, potentially making the CLA and other oils more effective. The product also includes Safflower Seed Oil (a common source of CLA), Coconut Oil, and Black Cumin Seed Oil. While these oils have their own health benefits, their direct synergy with CLA for significant weight loss or muscle gain is not strongly established, and they contribute to the calorie and fat content of the supplement. Online reviews for CLA products are often mixed, reflecting the varying individual responses and the general scientific consensus that CLA's effects on body composition are often modest. At $0.80 per serving, it falls on the pricier side, especially if a higher daily dose is consumed.