As a supplement, lecithin may be helpful in treating high cholesterol and neurological disorders such as dementia, according to Drugs.com. While lecithin is a natural substance found in a variety of foods and is safe for most people, there's always a potential that you may experience side effects when taking it in supplement form.
One potential side effect of lecithin supplements is an allergic reaction. Although not always, lecithin supplements are usually made from soy. Soy is one of the eight most common food allergens. However, any ingredient in the supplement may cause a reaction. Symptoms of an allergic reaction might include skin irritation, difficulty breathing, swelling, stomach upset, nausea, vomiting or diarrhea. If you have an allergic reaction to the supplement, contact your doctor immediately.
Although these side effects are not very common, according to Drugs.com, some people have complained of various digestive issues after taking lecithin supplements. Some of these complaints include an increase in salivation, nausea and other gastrointestinal problems. There have also been reports of hepatitis, which is an inflammation of the liver. If you experience any digestive issues after taking your supplement, you may want to stop taking it and consult your doctor to discuss risks and plan of action.
Loss of Appetite
Although some people may welcome this side effect, lecithin supplements are also known to cause a loss of appetite, says Drugs.com. This may be due to the fact that lecithin is a source of fat. Some brands of lecithin granules contains 8 grams of fat per recommended serving. Fat delays stomach emptying, which might keep you feeling full longer and affect your appetite.
Another possible side effect of lecithin supplements is weight gain. As a source of fat, these supplements are also a source of calories. One brand has 75 calories per serving. If you're not tracking the calories coming from your lecithin supplements, you may gain weight. Consuming an extra 75 calories a day may add an extra 7 pounds at the end of a year. Cutting back on your intake elsewhere or getting more activity may help prevent weight gain.