Safety & interactions
High vitamin C intake can cause diarrhea and abdominal cramps and may raise kidney-stone risk in susceptible people. Timed-release tablets do not remove dose-related risks.
Timed-release vitamin C supplies a nutrient or bioactive compound intended to alter a defined physiological pathway. The relevant form, baseline status and product quality determine whether the proposed mechanism is clinically meaningful.
Purpose, evidence and practical considerations.
High vitamin C intake can cause diarrhea and abdominal cramps and may raise kidney-stone risk in susceptible people. Timed-release tablets do not remove dose-related risks.
Regulatory status: dietary supplement
The evidence on this page does not automatically apply to: