Two tablets give 500 mg of calcium or one tablet ?

Yes, I hate when companies do this . It is very misleading. Why not just market it as 250 mg ? (10mg D3, 5mg Zinc. and 40 mg Magnesium - etc)

What is expiration date on Kirkland Calcium Citrate?

It depends on when your bottle is produced. I bought mine in 2021 so my bottle's date is 08/23. If you get a bottle with a passed expiration date, you should send it back to Amazon.

Will this prevent constipation

No. The citrate form of calcium does not cause constipation. The carbonate form does.

How much elemental calcium in each tablet? no guesses or assumptions please.

I recently researched how to calculate the elemental calcium and found this: Take the % calcium shown on the bottle who’s is 38% for 2 tablets in this case (not the 500mg) and multiply it by 10. The result would be 380 mg elemental calcium.....not much!

Signature Calcium Citrate Magnesium And Zinc 500 Tablets

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🦴 Fortify your foundation with every tablet — because strong bones never go out of style!

MINERAL SYNERGY - Magnesium 80 mg and Zinc 10 mg work together to optimize bone health
TRUSTED COSTCO BRAND - Kirkland Signature quality with 4.7-star rating from 3,700+ users
BULK SUPPLY ADVANTAGE - 500 tablets ensure you never run out of essential nutrients
COMPLETE BONE SUPPORT - Calcium Citrate 500 mg fuels strong bones and teeth daily
ENHANCED ABSORPTION FORMULA - Vitamin D3 20 mcg boosts calcium uptake for maximum benefit

Kirkland Signature Calcium Citrate Magnesium and Zinc delivers a potent blend of 500 mg calcium citrate, 20 mcg vitamin D3, 80 mg magnesium, and 10 mg zinc in a convenient 500-tablet supply. Designed for adults seeking comprehensive bone and dental health support, this unflavored supplement combines essential minerals to enhance absorption and maintain strength. Highly rated and trusted, it’s a smart choice for long-term wellness.

Specifications

ASIN	B07N798Y1J
Age Range Description	Adult
Best Sellers Rank	#30,724 in Health & Household ( See Top 100 in Health & Household ) #173 in Calcium Mineral Supplements
Brand	KIRKLAND
Brand Name	KIRKLAND
Concentration	500
Customer Reviews	4.7 out of 5 stars 3,752 Reviews
Flavor	Unflavored
Item Form	Tablets
Item Weight	1.8 pounds
Manufacturer	Kirkland Signature
Manufacturer Part Number	588153
Model Number	588153
Number of Items	1
Primary Supplement Type	Calcium
UPC	676538001866
Unit Count	500 Count

Reviews

L**L

Calcium Tablets not received but great product.

Not sure what happened but I never received my calcium tablets. Contacted the seller and they have issued a refund. I've ordered these calcium Tablets before and I like that they have magnesium and zinc which is why I placed another order.

20.05.2026

T**T

Brand name from Costco

Costco brand and sent to my house and works great for my needs. Will buy again

11.05.2026

C**N

As advertised

Product as advertised.

11.06.2026

M**A

Lo que andas buscando!!

Si te duelen las articulaciones es lo que necesitas desde que empecé a tomarlas me siento con más energía y ya no me duelen los músculos

16.07.2026

D**A

Muy buena calidad

Excelente calidad

22.05.2026

F**A

Excelente

Very good

13.05.2026

A**Z

Good for him

My dad loves this product and asks me to get it to him every time I'm in the States.

6.01.2026

R**O

Relación cantidad y precio

La cantidad de la tabletas son ideal para su precio

22.02.2026

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€ 56.39

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Signature Calcium Citrate Magnesium and Zinc, 500 Tablets

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Description

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Common Questions