Calcium Citrate +D3 Maximum

Name: Calcium Citrate +D3 Maximum
Brand: 21st Century
SKU: 1lAYANy6
Rating: 4.75 (26378 reviews)

21st Century

4.8

★ ★ ★ ★ ★

(26378 ratings)

Calcium 630 mg

Score

A reliable 60-day supply of well-absorbed calcium citrate and vitamin D3 for skeletal maintenance.

How scoring works

Quantity:120 Tablet(s) • (60 servings)

Goals:

Bone Health

Score 92

A reliable 60-day supply of well-absorbed calcium citrate and vitamin D3 for skeletal maintenance.

How scoring works

Also available as 2 options

400mg • 200 Tablet(s) servings Calcium 400 mg • 200 Tablet(s) • 100 servings $10.99 ($0.10 per serving) 75 servings Calcium 630 mg • 75 Tablet(s) • 37 servings $6.49 ($0.17 per serving)

$6.99($0.11 per serving)

Amazon	$ 6.99
iHerb	$ 8.49

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Analysis

The combination of calcium citrate and cholecalciferol (D3) is one of the most reliable pairings for skeletal support. Citrate is highly soluble, which helps it get into your system more effectively than standard mineral salts.

This supplement is a great practical choice for daily use because it doesn't require a heavy meal to work properly. It provides a robust dose of elemental calcium in a form that respects your digestive health.

Pros

Well-absorbed citrate form
Includes vitamin D3
Gentle digestive profile
Good price-to-potency ratio

Cons

No magnesium support
Missing trace minerals
Tablets may be difficult for some to swallow

Warnings

Monitor for any signs of hypercalcemia if taking high doses
Consistency is key for bone health

Nutrient quality

Highest impact

High solubility of the citrate form ensures efficient absorption in the digestive tract. Inclusion of vitamin D3 provides the necessary signaling for mineral transport to the bones.

Ingredient transparency

Highest impact

Disclosure of both the specific chemical forms and elemental amounts allows for accurate nutritional assessment. Clear serving instructions facilitate proper use to maximize intestinal absorption.

Customer satisfaction

Highest impact

Exceptionally high ratings across a massive number of reviews indicate strong consumer confidence. Consistency in feedback suggests that the sensory experience and perceived results meet user expectations.

Value for money

Highest impact

Highly competitive pricing per serving provides excellent value for a bioavailable mineral source. The inclusion of vitamin D3 at this price point enhances the overall utility of the purchase.

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Goals

Selected only

Bone Health

Impact

Highest effect

Goal Fit

Strength of Support

Coverage

Formula Quality

Vitamin D · 13 mcgCalcium · 630 mg

Calcium citrate provides a highly bioavailable structural mineral to maintain bone mineral density and skeletal strength. Vitamin D3 is included to ensure efficient intestinal absorption and mineral transport to the bone matrix.

This selection is superior to standard carbonate forms due to its high solubility and lack of requirement for stomach acid. However, the formula lacks foundational magnesium and signaling cofactors like vitamin K2, which are necessary for full skeletal synergy.

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Ingredients

Display goals

Ingredient	Amount per serving
Vitamin D3	13 mcg
Calcium	630 mg

Report overview

CalciumOverallScore

A-

Active Ingredient Quality & Bioavailability

Dose, Safety & Label Transparency

A+

Value

This high-count bottle of calcium citrate offers premium mineral bioavailability for long-term bone density support. It provides a robust dose in a format that is well-tolerated by those with sensitive digestive systems.

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