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Calcium Carbonate Powder

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In stock

Price From: FROM $8.96

Ships today if ordered in the next 6 hours and 1 minutes!

Calcium Carbonate Powder


  • Supports healthy bones
  • Promotes gastrointestinal health
  • Source of calcium
  • Taste

  • Mixability

Calcium carbonate is a compound comprised of calcium, oxygen and carbon.


Serving Size & Timing

Suggested serving size for Calcium Carbonate is about 1250mg, or 3/8 tbs, to be taken one or two times per day, depending on intended effect. Since the FDA recommendation for Calcium intake per day is about 1000mg, and Calcium Carbonate contains about 40% Calcium; this means that a serving of 1250mg contains about 500mg, half of what the FDA recommends for total daily Calcium intake.

The best way to maintain healthy levels of Calcium is to have a Calcium-balanced diet. Since a single serving of any type of dairy generally contains about 300mg of Calcium, someone who has about four servings of dairy on a daily basis need not supplement their diet with any more.

Nutritional Information

Supplement Facts

Serving size: 1250 milligrams
Serving per container: *
Amount Per Serving % Daily Value**
Calcium (as Calcium Carbonate) 500mg 50%
* Daily Value not established.
** Based on 2,000 calorie diet


Sugar, soy, dairy, yeast, gluten, corn and additives.

As a dietary supplement, take 1250mg (scant 1/4 tsp) once or twice daily, or as directed by physician.

US Standard Measuring Spoons
Spoon Size(level) milligrams
1/8 teaspoon 667
1/4 teaspoon 1335
1/2 teaspoon 2672



This form of Calcium Carbonate is considered USP grade and does not contain any fillers. It is made up of about 40% Calcium by weight.


This supplement should be avoided by anyone that is pregnant or nursing. Any side effects from Calcium Carbonate are rare and typically only occur if suggested serving sizes are not adhered to. The worst side effects are loss of appetite, increased frequency of urination and dry mouth.

Calcium has the potential to bind to many different medications and to reduce the level of acidity in stomach acid or urine. While this would not necessarily neutralize them, it could cause their effectiveness to be diminished significantly. Taking this supplement should be discussed with a health care professional if this is a concern.


Calcium Carbonate should be well dissolved into water or juice. It is best to take Calcium Carbonate with a Vitamin D supplement or with Vitamin D-rich foods or drinks, as this will increase effectiveness of Calcium absorption. The powder should be stored in an area that is far away from any source of light or heat and should also be kept in a dry environment away from moisture.

California residents: Click here for Proposition 65 warning.

Customer Reviews

Used for homemade toothpaste
I bought this to use in making an homemade remineralizing toothpaste that I read from wellness mama's blog. I could see and feel the difference in the cleanliness and whiteness in my teeth. The product is clean and very finely ground just as exactly what I was hoping to get.*

On 10/1/2018 Olubukola said...

helpful in building my bones and decreasing heartburn
So I started taking this supplement because I simply don't get enough calcium in my diet and I want to make sure my body has all the necessary ingredients to maintain strong bones. The great added bonus for me is that I suffer from heartburn somewhat regularly and this I notice if I take a dose of Calcium Carbonante before bed my heartburn immediately goes away and I get a good nights rest without constantly waking up in the middle of the night. I will continue to use this product. Thanks Bulk Supplements.*

On 7/31/2018 Mark said...

I haven't actually received my order yet but the deadline for review is today. Be forewarned that it is the companies policy not to help you if Fedx does not deliver your package, even tho they would be the recipient of any claim money Fedx might refund. *

On 3/22/2017 MElinda said...

Calcium Carbonate
I'm super excited about this supplement. I recently started making my own homemade toothpaste. I was extremely happy to see that calcium carbonate is available on this site. It's an ingredient that I need to help strengthen the enamel of our teeth. The order was received promptly and it was packaged well. If you're in the market for high quality supplements, I highly recommend Bulk Supplements.*

On 9/23/2016 Viorica said...

Another great supplement
Fast shipping, great price and mixes very easily with little to no taste. Very happy with this as well as my other purchases*

On 6/23/2016 Sara said...

great product for good price
great product for a good price..not available in my area..shipped quickly...calcium carb in its purest form not from oyster shell*

On 1/25/2016 Amanda said...

Benefits of Calcium
I am a life-long consumer of calcium supplements, and can't say enough about their nutritional value. Modern farming and food processing practices leave our diets woefully mineral deficient. For myself and family members who tend to measure highly acidic urine and saliva, we take calcium carbonate at every meal, whether I cook with it, or take separately. Calcium carbonate alkalizes those of us who are too acidic, and neutralizes stomach acids in the same way antacid tablets do. Additionally, we take other calcium supplements as well, to round out our nutritional menu. Thank you BulkSupplements for making so many great supplements in bulk for us!*

On 1/17/2016 Ava said...

Main Ingredient for homemade toothpaste
I wanted to make my own toothpaste and this is one of the main ingredients. It was easy to make using the calcium carbonate (along with xylitol) and I don't have to worry about the fluoride used in most commercial toothpastes. *

On 12/6/2015 Helen said...

Exactly as Ordered
My shipment came quickly, in good shape and was exactly what I ordered. I appreciate the good price and usability of the website. Will order again.*

On 6/9/2015 Eileen said...

Calcium Carbonate
This review might not what you expect . I use Calcium Carbonate for making chalk paint. And it is AWSOME . So I will be ordering more. Thank you, Linda*

On 4/14/2015 Linda said...

Calcium Carbonate
I received my order very quickly and so far I like this product.*

On 1/12/2015 Dany said...

calcium carbonate
Calcium Carbonate is a necessity to maintain strong bone mass especially after 40 years old. I train 12 hours daily with individual Chinese Military energy conditioning systems and also teaching QI Gong and Taijiquan classes over the past 44 years. Chinese military systems are extremely demanding as tremendous amounts of pressurized force is placed on the skeleton system consistently. Adding Bulk Supplements protein powder with Calcium Carbonate and adding vitamin D3 is an incredible combination that helps to prevent fatigue mentally and physically.

Calcium can be found in foods also but it is difficult to eat every couple of hours and a small protein shake is sufficient and takes less time as I only have a few minutes between classes. I use the pure vitamin D3 that is fantastic as you see a improvement in hair looking healthier and it helps to absorb the calcium into the bones. Supplements have come a long way over the past 44 years, but they only work with proper professional training, using the correct amounts, and understanding what supplements are best for each other and how they affect your training. Bulk Supplements work extremely well and I like to mix my own protein shake rather than eat protein bars or sports drinks and the cost is sufficiently less.*

On 12/17/2014 JOSEPH said...

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Product Questions

Is your Calcium Carbonate Powder vegan? If not, please indicate what is in it which is not.