Vitamins & Supplements

How to Make Calcium Powder from Eggshells and Why It’s a Must-Try

calcium eggshells

Did you know that the human body houses an abundant supply of calcium, making it the most prevalent mineral? Eggshells offer a fantastic, budget-friendly, and natural calcium source that is highly accessible to the body. Ready to learn an effortless recipe to make your own eggshell calcium?

Calcium is a crucial mineral that plays a vital role in maintaining strong bones, teeth, and overall health. While there are various sources of calcium available, one of the most bioavailable and sustainable forms can be obtained from free-range pasture-raised eggshells. In this blog post, we will delve into the process of creating calcium powder from eggshells, discuss its benefits, explore its uses, and provide you with a simple recipe to make it at home.

The Bioavailability of Eggshell Calcium

Eggshells are primarily composed of calcium carbonate, which is similar to the calcium found in our bones and teeth. The unique structure of eggshell calcium allows it to be easily absorbed by our bodies, making it highly bioavailable. Research suggests that eggshell calcium may have a higher absorption rate compared to other forms of calcium supplements, making it an excellent choice for individuals looking to enhance their calcium intake.

Why Choose Free-Range Pasture-Raised Eggs?

When making calcium powder from eggshells, it is essential to source them from free-range pasture-raised eggs. These eggs come from hens that are allowed to roam freely outdoors, consuming a more diverse and natural diet compared to conventionally raised hens. As a result, their eggshells tend to contain higher levels of essential nutrients, including calcium and other minerals.

Benefits of Eggshell Calcium:

  1. Bone Health: Calcium is crucial for maintaining strong bones and teeth. Adequate calcium intake can promote optimal bone density and minimize the risk of fractures and bone-related ailments.
  2. Digestive Health: Eggshell calcium has been shown to possess antacid properties, providing relief from acid reflux, heartburn, and indigestion.
  3. Nutrient Boost: Calcium is essential for the proper functioning of muscles, nerves, and enzymes in our bodies. By incorporating eggshell calcium into your diet, you can ensure a sufficient intake of this vital mineral.
  4. Enhanced Absorption: As previously mentioned, eggshell calcium boasts superior bioavailability, meaning our bodies can readily absorb and utilize the calcium it provides more effectively.
  5. Budget-Friendly: Eggshell calcium is a cost-effective alternative to store-bought supplements, as eggshells are often discarded and can be repurposed into a valuable calcium source.

Uses and Consumption of Eggshell Calcium Powder:

  1. Dietary Supplement: Eggshell calcium powder can be used as a dietary supplement to increase your daily calcium intake. It can be easily incorporated into various recipes or taken as a standalone supplement.
  2. Culinary Applications: Add a pinch of eggshell calcium powder to smoothies, soups, sauces, or baked goods to fortify them with an extra dose of calcium.
  3. Homemade Toothpaste: Combine eggshell calcium powder with coconut oil, baking soda, and peppermint essential oil to create a natural toothpaste that promotes healthy teeth and gums.

Making Eggshell Calcium Powder:

Now, let’s guide you through the simple process of creating calcium powder from free-range pasture-raised eggshells.

Ingredients & Equipment:

  • Clean, dry free-range pasture-raised eggshells (consider sourcing fresh eggs directly from the farm, and opt for eggs from chickens that do not consume soy)
  • Glass or stainless steel baking sheet
  • Oven
  • Coffee grinder, mortar and pestle or Vitamix.


  1. Collect and Clean the Eggshells: Save eggshells from your free-range pasture-raised eggs. Rinse them thoroughly to remove any traces of egg white or yolk. However, it’s essential not to remove the membrane, as it contains additional nutrients. Allow them to air-dry completely.
  2. Prepare a stock pot and fill it with about 6 cups (more if you’re using more than a dozen eggshells) of filtered water. Bring the water to a boil over high heat. This process will kill any and all harmful pathogens. Let it bake for 10 minutes.
  3. Drain the shells and spread them out on a baking sheet and allow them to dry.
  4. Preheat the Oven: Preheat your oven to 200°F (93°C).
  5. Bake the Eggshells: Place the clean and dry eggshells on a baking sheet and bake them in the preheated oven for approximately 10-15 minutes. This process helps remove any remaining moisture and sterilizes the shells.
  6. Crush the Eggshells: Once the shells are cooled, grind them into a fine powder using a coffee grinder, mortar and pestle or Vitamix. Ensure that the powder is uniform and free of any coarse fragments.
  7. Store the Powder: Transfer the eggshell calcium powder to an airtight container and store it in a cool, dry place away from sunlight.

Dosage and Precautions:

The recommended daily calcium intake for adults varies, but it generally falls within the range of 1400-2000mg. For children 700mg-1300mg. While high-quality organic dairy products and raw options, along with bone broths, are fantastic sources of calcium, meeting the recommended daily intake can be challenging. Sometimes, especially during pregnancy or nursing, I find it necessary to rely on a calcium supplement.

However, with so many options available, like calcium citrate, hydroxide, gluconate, aspartate, and even Coral Calcium, choosing the right one can be overwhelming. As a holistic minded mom, I firmly believe that the best source of nutrients is whole FOOD since it is most easily accessible for the body. With that said, eggshells are an incredible, affordable, and natural source of calcium!

One teaspoon of this calcium powder contains approximately 800-1,000 mg of calcium. To consume it, mix the recommended amount with a small quantity of water and take it during a meal. It is suggested to take 3/4 to 1 teaspoon daily, divided into three servings during meals. However, it is crucial not to exceed the recommended dosage of 1 teaspoon per day to avoid potential irritation to sensitive digestive tracts.

Start Collecting Those Eggshells

By creating your own calcium powder from free-range pasture-raised eggshells, you can harness a highly bioavailable form of calcium that offers numerous health benefits for you and your precious babes. Incorporating eggshell calcium into your diet can support bone health, aid digestion, and provide essential nutrients for optimal bodily functions. Experiment with various culinary applications and homemade toothpaste to make the most of this natural and easily absorbable calcium source. Start collecting those eggshells!!

What about YOU? How do you incorporate calcium in your diet?