Tag: 40000 iu

According to research, high-dose vitamin D supplementation can significantly raise blood levels within weeks, but symptom improvement varies greatly depending on the individual. The timeline for how soon you'll feel better after taking a 40,000 IU vitamin D dose depends on several key factors.

For most healthy adults, the Tolerable Upper Intake Level (UL) for vitamin D is 4,000 IU per day. Taking a dose as high as 40,000 IU is considered potentially toxic and is far above the daily recommendation, carrying serious risks to your health. This article explores the significant dangers associated with excessively high vitamin D intake.