Biotin appears to be a very safe vitamin supplement as there has been no toxicity reported from oral biotin ingestion nor is there a Tolerable Upper Intake Level established.

Question

Quizplus · Accepted Answer

Biotin is considered a safe vitamin supplement, and there have been no reports of toxicity from oral biotin ingestion. Additionally, a Tolerable Upper Intake Level has not been established, indicating that there is no identified upper limit for safe consumption.

Biotin Appears to Be a Very Safe Vitamin Supplement as There