Source Naturals Diet Tonalin CLA Review

Editor's Review: 3.5 / 5.0

What You Should Know

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Source Naturals Diet Tonalin CLA supplies more than 2,000 mg of conjugated linoleic acid to increase lean muscle and decrease body fat. There are clinical trials supporting this function, but Source Naturals do not list any of these studies. On the flip side of the coin, the active ingredient in Diet Tonalin CLA is linked to side effects. Source Naturals lists all ingredients for the supplement. Despite the fact that Source Naturals claims the product has only 1,000 mg of conjugated linoleic acid, the label reads 2.2 grams or 2,200 mg.

List of Ingredients

Conjugated Linoleic Acid.

Product Features

Conjugated linoleic acid (CLA) has been thoroughly tested on animals and humans for potential health benefits. Among these benefits are reduced risk of breast cancer, colorectal cancer and lung cancer. CLA found in Source Naturals Diet Tonalin CLA may also improve heart health, bone health and reduce high cholesterol. These positive benefits are associated with natural forms of CLA not supplemental forms.

CLA is naturally found in beef and other animal products and foods. When taken in supplemental form, CLA may cause an upset stomach, gastrointestinal distress, lower good cholesterol and insulin resistance. These negative side effects are only associated with supplements, not natural forms of CLA.

Some experts believe CLA needs to be consumed from natural sources because it combines with other vitamins and nutrients to increase bioavailability. Nature is great about placing all the right vitamins, minerals and fats together to work best in the body.

Women who are pregnant or who may be pregnant should not taken supplements like Diet Tonalin CLA. Contact your physician before taking a supplement with CLA if you are currently taking cholesterol medication, as there is likely going to be a change in cholesterol levels.

Source Naturals Diet Tonalin CLA sells for $10.98 per 30 softgels and $34.98 per 120 softgels. This price is higher than comparable products.

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  • The product label for Source Naturals Diet Tonalin CLA is published in the product description.
  • Tonalin CLA may reduce fat stores and increase lean muscle mass.
  • The product is reasonably priced, though more expensive than comparable supplements.


  • Diet Tonalin CLA may reduce good cholesterol.
  • The supplement may cause stomach discomfort and gastrointestinal side effects.
  • Source Naturals does not sell supplements from the website.
  • The product description claims Diet Tonalin CLA has 1,000 mg of CLA by the label reads 2,200.


There was a time when CLA was considered the best fat burner on the market. Since that time, clinical research has proven claims of increased lean muscle, but that does not erase the potential side effects. Dieters should be wary of taking CLA supplements like Source Naturals Diet Tonalin CLA.

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