No image available

Vitamin D3 100 mcg (4000 IU) Dietary Supplement

Unknown

#Vitamin D

Safety90

Efficacy90

Transparency50

Based on Examine, Wikipedia, and 23 other sources

Overview

This Vitamin D3 supplement provides a significant and effective dose (4000 IU or 100 mcg) which is aligned with optimal and therapeutic levels for many individuals. The efficacy of Vitamin D3 is well-established through extensive research, including meta-analyses demonstrating benefits across all-cause mortality, bone health, and immune function, especially in deficient populations. The absence of other ingredients means the focus is solely on Vitamin D3's known actions.

The Good

Optimal Dose for Broad Benefits: The 4000 IU (100 mcg) dose is well-researched and aligns with recommendations for achieving and maintaining adequate vitamin D levels in many individuals, supporting bone health, immune function, and overall mortality reduction.

Strong Scientific Evidence: Vitamin D3 is one of the most studied supplements, with robust evidence from numerous RCTs and meta-analyses supporting its efficacy for various health outcomes.

High Safety Profile at This Dose: 4000 IU is generally considered safe for long-term use in healthy adults, with a low risk of adverse effects.

The Bad

Individual Variability in Response: The optimal dose and individual response to vitamin D3 can vary based on factors like genetics, baseline status, sun exposure, and body weight.

Potential for Drug Interactions: May interact with certain medications, including corticosteroids, anticonvulsants, and some weight-loss drugs.

Risk of Hypercalcemia at Excessive Doses: While 4000 IU is generally safe, very high doses (beyond established upper limits) for prolonged periods can lead to hypercalcemia, though this is less likely at this specific dose without other contributing factors.

Is it for you?

Best For: Individuals with Vitamin D deficiency, those with limited sun exposure, or people looking to support bone and immune health.

Skip If: You have hypercalcemia, kidney disease, or are taking medications that interact with Vitamin D. Consult a doctor if pregnant or breastfeeding.