Tonalin CLA may cause upset stomach, diarrhea, nausea and fatigue, according to WebMD. Other risks of using this supplement include worsened insulin resistance, fatty liver, low levels of good cholesterol and increased inflammation.
Tonalin CLA offers a concentrated dose of the naturally occurring fatty acid conjugated linoleic acid in an oral tablet. Tonalin CLA is commonly used as a weight loss aid, as it may decrease body fat and help the body feel full after eating, states WebMD.
CLA is an antioxidant, so some take this fatty acid in supplement form to lower their chances of developing certain cancers. However, research is still needed to determine if Tonalin CLA is as effective as absorbing CLA naturally from a healthy diet. CLA supplements are also used for other conditions ranging from dry skin to multiple sclerosis, according to WebMD.
Before taking Tonalin CLA, individuals are advised to speak to their physicians, as this supplement can negatively interact with some medications, reports WebMD. CLA supplements can interfere with drugs for schizophrenia and other mental disorders. Tonalin CLA is not recommended for children or for women who are pregnant or breast-feeding due to the lack of research on the safety of this supplement.
Certain dangerous side effects are associated with Tonalin CLA due to its synthetic CLA content, notes eMedTV. Compared to CLA that occurs naturally in meat and dairy products, synthetic CLA typically contains a higher amount of the isomer that is considered to be the culprit of the adverse effects. Anyone who experiences unwanted effects should consult a health care professional immediately and discontinue use.
Many overweight people who consider taking CLA suffer from thyroid disorders. No evidence suggests that this supplement interferes with thyroid medications, according to About.com, but these individuals are advised to check with their physicians before taking this or any other nutritional supplement.