

Vitamin D3 400 IU
Bluebonnet Nutrition
Overview
While Vitamin D3 is a highly effective and essential nutrient, the 400 IU dosage in this product is generally considered a maintenance dose rather than an optimal therapeutic dose for many adults, especially those with insufficiency or deficiency. This dose covers only 50% of the daily value for some guidelines and is on the lower side of commonly recommended daily intakes for adults.
The Good
Provides essential Vitamin D3 for overall health.
Supports bone health and calcium absorption.
Contributes to immune system function.
The Bad
Dosage (400 IU) is sub-optimal for many adults to achieve or correct deficiency.
May require multiple capsules daily to reach more effective doses.
Not sufficient for therapeutic intervention in cases of significant deficiency.
Is it for you?
Best For: Individuals seeking bone health support, immune system boost, general wellness
Skip If: You have hypercalcemia or a known allergy to any ingredients
Ingredients Analysis
How to Use
Take one softgel daily, preferably with a meal, or as directed by a healthcare practitioner.
Daily
Anytime
With food
Who Should Use This
Best For:
Similar Products
Recommended Articles

Herbal Boosters & COVID-19 Antivirals: Safe Mix?
Herbal supplements may interact with COVID-19 antivirals, requiring careful consideration and further research.

2025's Top Vegan Protein Powders: A Buyer's Guide
In 2025, the best vegan protein powders are third-party tested, ensuring purity, safety, and high nutritional content.

Immune Supplements & Pregnancy Safety 2025
The safety of immune-boosting supplements during pregnancy in 2025 hinges on supplement type, dosage, and health conditions.

Top Immune Support Ingredients: What Works?
Vitamin D, zinc, and echinacea are key ingredients in immune support supplements, backed by scientific evidence.