Conjugated linoleic acid, or CLA, is a popular supplement often advertised as a way to build muscle fast. Today we’re taking a look at some of the known and rumored side effects of CLA.
This article is offered as a supplement to our article on a CLA-based product called C9-T11, which is one of many such CLA products on the market. This following list contains some of the more commonly-known side effects of conjugated linoleic acid. These are the more serious of the possible side effects.
Possible Side Effects of CLA
- Diarrhea
- Fatigue
- Insulin resistance
- Liver health
- Stomach upset
Other Considerations
- Heart Disease: According to the University of Michigan Health System, overweight people who use CLA for long periods have a greater risk of heart disease development.
- Diabetes: Avoid CLA if you have diabetes because CLA may worsen symptoms. CLA may also increase risk of getting diabetes if you have metabolic syndrome or are significantly overweight.
- Cholesterol: While CLA is known to lower cholesterol, this includes good cholesterol, too.
- Bleeding Disorders: CLA may escalate bruising and bleeding. Those with bleeding disorders, or those about to undergo surgery, should avoid using CLA.
- Allergic Reaction: It is also possible in rare cases to have an allergic reaction to CLA, so watch for hives, itching, or other symptoms of an allergic reaction.
Anecdotal Side Effects
- Acid Reflux
- Fatigue
- Headache
- Heartburn
- Indigestion
- Nausea
- Thirst
Bottom Line
CLA, or conjugated linoleic acid, is a well-known bodybuilding supplement which is advertised as a way to quickly build muscle. There are some known side effects which have been widely reported. In addition, we have included a list of potential warnings/interactions and a brief list of anecdotal side effects reported to us by users.
Your Turn
Have you experienced any side effects from CLA not mentioned here? Let us know in the comments below.
Updated February 13, 2015
Originally published February 2013