Browse Side Effects

Exhibits weak phytoestrogenic effects in vitro; clinical significance in humans is unclear but a consideration for hormo...

Weak phytoestrogen activity; theoretical concern in hormone-sensitive conditions.

As a fermentable oligo-, di-, monosaccharide and polyol (FODMAP), it may worsen symptoms in individuals with irritable b...

Causes or contributes to Eye Irritation.

Causes or contributes to Fatigue.

High doses, particularly of leucine alone, may cause fatigue and loss of coordination due to increased ammonia productio...

May cause drowsiness or fatigue in some individuals, particularly when first starting supplementation.

Causes or contributes to Fishy Aftertaste.

High doses of L-Carnitine can lead to a fishy body odor due to the metabolism of the compound, which is generally harmle...

Causes or contributes to Fishy Burps.

High doses of L-Carnitine can lead to a fishy body odor due to the production of trimethylamine, a byproduct of its meta...

Excessive diuresis can lead to dehydration, hypotension, hyponatremia, hypokalemia, and hyperosmolarity.

A common side effect of Niacin supplementation, characterized by redness and warmth in the skin, particularly in the fac...

Causes or contributes to Fullness.

In severely immunocompromised individuals, critically ill patients, or those with central venous catheters, there is a r...

Rare cases of fungemia (yeast in bloodstream) have been reported, primarily in critically ill, immunocompromised, or cat...

Rare cases of fungemia (yeast in bloodstream) have been reported in critically ill, immunocompromised, or catheterized p...

Causes or contributes to Gas.

Mild and transient gas or bloating may occur during initial use as the gut microbiota adjusts.

May cause minor abdominal discomfort, flatulence, or bloating.

Causes or contributes to Gas and Diarrhea.

Causes or contributes to Gastrointestinal Cramping (internal).

May cause mild stomach upset, diarrhea, or nausea, especially at higher doses or on an empty stomach.

Causes or contributes to Gastrointestinal Discomfort (debated).