Nature's Truth Vitamin D3 | 400 iu (10 mcg) | 100 Tablets | Vegetarian, Non-GMO, & Gluten Free Supplement Review

4.7 (1,000) Amazon rating$6.891,000+ bought last month

Our verdict

An entry-level, low-potency 400 IU vitamin D3 tablet in a small 100-count bottle, priced to match its basic positioning in this category.

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Best for

Shoppers wanting a low-dose, vegetarian, budget-friendly D3 tablet as a simple daily add-on.

Skip if

You want a higher potency like 2,000 IU or more, or a larger bottle that lasts several months.

  • Form Tablet
  • Count 100 Count
  • Flavor Unflavored
  • Type Vitamin D3
  • Diet Gluten Free
  • Benefits Immune Support
  • Priced 52% below the category median ($14.49 across 136 tracked models)

Pros

  • Vegetarian, non-GMO, and gluten-free label
  • Low 400 IU potency suits a mild daily dose
  • Affordable price for a 100-count bottle
  • Solid 4.7 rating

Cons

  • 400 IU is a low potency next to the 2,000 to 10,000 IU options elsewhere in this category
  • Smaller review count than the top sellers, about 1,000 ratings
  • 100-count bottle is a shorter supply than many competitors
  • Unflavored tablet only

Our scorecard

4.7/5 overall
  • Owner rating4.7/5

    4.7 average across 1,000 owner ratings

  • Popularity0.8/5

    1,000 owner reviews, fewer than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other home health monitors: bathroom scales, blood pressure monitors, pregnancy and ovulation tests, thermometers, body composition monitors, stethoscopes, glucose monitors and pulse oximeters we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

["Nature's Truth positions this at 400 IU per tablet, one of the lowest potencies in this category, in a compact 100-count bottle priced at $6.89. That combination suits shoppers who want a mild, everyday dose rather than a concentrated one.", 'The unflavored tablet is labeled vegetarian, non-GMO, and gluten-free, and the maker markets it for immune support. These claims come directly from the label and are not medical guarantees.', 'Reviews are more limited here, with about 1,000 ratings averaging 4.7 stars and roughly 1,000 buyers a month. That is a smaller sample than the bestsellers in this category, so it is worth weighing alongside more heavily reviewed options. Talk to a healthcare professional before adding any new supplement to your routine.']

Specifications

FormTablet
Count100 Count
FlavorUnflavored
TypeVitamin D3
DietGluten Free
BenefitsImmune Support
AllergensGluten Free

Performance notes

This is a tablet-form vitamin D3 supplement at 400 IU per serving, in a 100-count bottle. It is unflavored, vegetarian, non-GMO, and gluten-free, with a stated benefit of immune support.

What buyers say

About 1,000 reviews average 4.7 stars, with roughly 1,000 monthly buyers, a smaller but positive sample compared to the highest-volume products in this category.

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More from Nature's

Similar home health monitors: bathroom scales, blood pressure monitors, pregnancy and ovulation tests, thermometers, body composition monitors, stethoscopes, glucose monitors and pulse oximeters to consider

Frequently asked questions

Is 400 IU a strong dose?

It is on the lower end for vitamin D3 supplements in this category, where many products range from 1,000 to 10,000 IU. A healthcare professional can help you decide what potency makes sense for you.

Is this tablet vegetarian?

Yes, the label states it is vegetarian, along with non-GMO and gluten-free claims, which may matter to shoppers avoiding gelatin-based softgels.

How many tablets are in a bottle?

The bottle contains 100 tablets. At a typical one-per-day serving, that works out to a little over three months of use.

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