Pure 1000 Conjugated Linoleic Acid (CLA). Stimulant Free Fat Loss. CLA is an omega-fatty acid found naturally in meat and dairy though only in small quantities. Supplementing with CLA may have a significant impact on how the body utilizes and deposits fat. Certain studies suggest that CLA supplementation can help reduce body fat and increase lean mass. CLA is not a stimulant like other popular fat-burning supplements making it especially useful for the stimulant-sensitive. Furthermore, CLA is a great product to include in a weight loss stack, with or without stimulants.