What's the difference between Calcium citrate and calcium carbonate

The difference between the two supplements include (a) the percentage of elemental calcium provided per 100mg, and (b) the way the body absorbs the supplement. Calcium carbonate is made up of 40% elemental calcium and 60% carbonate ingredient, so one 600mg tablet provides 240mg calcium. Calcium Citrate is made up of 20% elemental calcium and 80% citrate ingredient, so one 600mg tablet provides 120mg calcium. While you are technically getting more elemental calcium from a Calcium carbonate supplement, Calcium citrate supplements are absorbed more easily than calcium carbonate. They can be taken on an empty stomach and are also more readily absorbed by people who take acid-reducing heartburn medications.

What is the Expiration date?

the date should be on the bottle or box it comes in

is the bottle printed with "enter code for wellness rewards points... " right of the nature made brand in the green area? the amazon's picture has .

Some have the code for the points and some products don't have a code. Nature Made started a new program in May of 2015. and most of the codes now go for a chance to win something. Go to http://www.naturemade.com/ If you have an account there. sign in with your e mail and check the FAQ's There it will tell you all about the program. I haven't purchased any Nature Made products that had any code at all on them in over a year. Hope this helps you.

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Nature Made Calcium 500 mg with Vitamin D3 for Bone Support, 130 Tablets

Nature Made Calcium 500 mg with Vitamin D3 for Bone Support, 130 Tablets

Product ID: 6371815

Details

Brand
Nature Made
Flavor
Unflavored
Item Form
Tablet
Primary Supplement Type
Calcium
Unit Count
130 Count

💊500mg Calcium per tablet

☀️Vitamin D3 boosts absorption

🛡️USP verified quality & potency

97.30 DT

Duties & taxes included

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🦴 Elevate your bone game with trusted, clean calcium power!

DAILY CONVENIENCE - 130 easy-to-swallow tablets, perfect for your busy lifestyle
BONE BOOSTING POWER - 500mg Calcium + Vitamin D3 for optimal bone strength
CLEAN PURE FORMULA - Gluten free, no artificial colors or flavors—pure wellness
IMMUNE BONE SUPPORT - Supports both bone health and immune function in one tablet
TRUSTED QUALITY ASSURANCE - USP verified for ingredient accuracy and potency

Nature Made Calcium 500 mg with Vitamin D3 delivers a potent, clean formula designed to support bone strength and immune health. Each gluten-free tablet is USP verified for quality and potency, providing 130 convenient doses to seamlessly fit into your daily routine.

Specifications

ASIN	B004B8JGUW
Age Range Description	Teen, Adult
Allergen Information	Gluten Free
Brand	Nature Made
Brand Name	Nature Made
Customer Reviews	4.7 out of 5 stars 5,817 Reviews
Diet Type	Gluten Free
Flavor	Unflavored
Global Trade Identification Number	00031604025175
Item Form	Tablet
Item Weight	7.9 ounces
Manufacturer	Nature Made
Manufacturer Part Number	2517
Material Type Free	Gluten Free, No Artificial Colors, No Artificial Flavors
Model Number	2517
Number of Items	1
Primary Supplement Type	Calcium
Product Benefits	Immune Support,Bone Strength
UPC	031604025175
Unit Count	130 Count

Reviews

D**J

High quality Calcium supplement

Exactly what I was looking for in a calcium supplement. Easy to swallow and the perfect 500mg recommended Highly recommend this Nature Made purchase

4.03.2026

M**O

Great value

13.02.2026

T**X

Works. Well tolerated - hypoPARAthyroidism

For someone who has hypoPARAthyroidism, this is my lifeline.

17.07.2026

L**N

Plain white pills not too difficult to swallow

Ordered these purely to take exact amount of mg from my doctor’s advice. The white pills are not too difficult to swallow, but a plain white pills that I wish in a different color or shapes. I still am glad to find pills exact for my daily consumption, which wasn’t easy at stores near me.

13.09.2025

J**H

Quality

Fast delivery. Just what I need. Bought multiple times now. Will again in the future

1.07.2026

P**W

Best deal out there

Best deal out there. Walgreens would have a buy one get a second bottle 50% off, but it wasn't. They just raised the price. I don't like that they think we can't do simple math.

11.06.2026

T**R

Great Daily Calcium Supplement

I’ve been taking Nature Made Calcium One A Day and it’s been a reliable way to support my bone health. The tablets are easy to take, gentle on the stomach, and I appreciate that it only requires one per day. A simple, effective supplement I plan to keep u

16.09.2025

D**E

comfortable to use

Size small enough to easily swallow.

8.06.2026

D**N

Good quality and fast delivery

27.05.2021

A**R

Nice

9.06.2025

P**N

World class company by USA

Just too good

30.06.2025

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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97.30 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

2 days ago

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I loved the variety of products available. Will definitely shop again.

2 months ago

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