Why L-Carnitine Supplementation Is Not Recommended

Reasons for not recommending the consumption of L-carnitine are mainly related to gastrointestinal discomfort, malnutrition, decreased sleep quality, skin problems, and increased burden on the kidneys. Before choosing to use L-carnitine, it is advisable to consult a doctor or professional to understand whether your physical condition is suitable for its use. The analysis is as follows:

1. Gastrointestinal discomfort: After taking L-carnitine, some individuals may experience gastrointestinal discomfort symptoms such as indigestion and diarrhea. This may be due to the irritating effect of L-carnitine on the gastrointestinal tract. Long-term use of L-carnitine may excessively stimulate the gastrointestinal tract, causing overly rapid intestinal motility and subsequently triggering diarrhea.

2. Malnutrition: Long-term use of L-carnitine may cause aversion to food, leading to nutrient deficiencies and eventually malnutrition.

3. Decreased sleep quality: L-carnitine contains polyphenolic substances, and excessive use may lead to accumulation in the body, causing nervous system excitation, thereby affecting normal sleep.

4. Skin problems: L-carnitine can cause significant fat burning, but during the process of rapid fat breakdown, it may lead to issues such as wrinkling and skin laxity.

5. Increased burden on the kidneys: The kidneys are the primary organ responsible for eliminating L-carnitine metabolites. Long-term excessive intake of L-carnitine may increase the burden on the kidneys and potentially damage kidney function.

The use of L-carnitine should follow professional guidance from a physician to avoid blindly following trends or excessive intake, which could lead to the aforementioned pathological issues.