Reduce Body Fat. Helps Keep Fat Off & Prevents Regain. Clinically Proven Tonalin CLA. Clinically Validated Ingredient. CLA (conjugated linoleic acid) is a recognized supplement derived from safflower oil. Years of research at the University of Wisconsin indicate that CLA may help “partition” the way energy is stored and utilized may result in a reduction of body fat and increased muscle retention. Tonalin CLA is the only patented form of conjugated linoleic acid.