What is a common side effect reported with the use of NaHCO3?

The experience of gastrointestinal discomfort is a well-documented side effect associated with the use of sodium bicarbonate (NaHCO3) as an ergogenic aid, particularly in sports nutrition contexts. When ingested, sodium bicarbonate can lead to an increase in stomach acid, which may result in symptoms such as bloating, cramping, and diarrhea. This discomfort occurs due to the elevated bicarbonate levels in the gastrointestinal tract, which can disrupt normal digestive processes and lead to a feeling of unease. As a result, many athletes may experience these gastrointestinal disturbances when using NaHCO3 to enhance performance through mechanisms related to buffering lactic acid during high-intensity exercise. This makes gastrointestinal discomfort the most common and relevant side effect linked to NaHCO3 supplementation among athletes and individuals engaging in strenuous physical activity.