Pet Nutrition

Calcium Supplement

Eggshell Calcium

Powdered eggshells make a great calcium supplement for dogs and cats being fed a homemade diet. Adding calcium will balance the excess phosphorus found in red meat diets that don't include bone.

You can use any kind of eggs (chicken, duck, etc.), but it is best to choose certified organic eggs from free-range, naturally fed birds. If the bird isn't supplied with proper nutrition the eggshells won’t contain the needed nutrients. Eggshells contain, calcium and micro-elements, such as, magnesium, boron, copper, iron, manganese, molybdenum, sulphur, silicon and zinc, etc. In total there are 27 vital elements. The composition of an eggshell is very similar to that of bones and teeth.


Wash empty eggshells in warm water until all of the egg white is removed, be careful not to remove the papery thin membrane attached to the inside of the shell because it contains important nutrients for your pet's joints that help with arthritis.

Lay the broken shells out on paper towels and allow them to air dry thoroughly.

Break the eggshells up into small pieces, and grind them to into a fine powder in a coffee grinder, or put them in a plastic bag and use a rolling pin to grind them. Please note that most food processors or blenders will not grind the eggshell finely enough. A coffee grinder works the best.

Store powdered eggshells in a glass jar with a tight fitting lid. Keep it in a dry place, like a kitchen cabinet.


If you're using ground egg shells as a calcium supplement for a homemade diet, you will need to add 1/2 tsp. of the powder (this equals about 400 milligrams of adsorbable calcium) for each pound of boneless meat in your recipe.

One whole medium sized eggshell = about one teaspoon of powder, which provides approximately 750 to 800 milligrams of elemental calcium. Elemental amounts are the amounts available for absorption.

It is always a good idea when adding any new supplement to your pet's diet to "Start low & Go Slow." Begin by adding the supplements in smaller amounts than the suggested dose. Work up to the recommended amount slowly over several days, adding a little more each day. This gives the animal's body time to get accustomed to the new addition. We find when people follow this rule, that there are few if any problems with tummy upsets or the pet refusing the supplement.

For keeping pets healthy the natural way, we recommend using Pet Remedy Charts, a Step-by-Step Holistic Home Healthcare System that will enable you to naturally treat your pet at home (without drugs) using safe, side effect free healing methods for dogs, cats, horses, birds, pet rats and backyard chickens.

The information herein is intended for educational purposes only. It is not meant to be used as a diagnosis, prescription or treatment, nor is it meant to replace the medical services of a veterinary professional. The remedies, approaches, and techniques described in these materials are not to be a substitute for, professional veterinary care or treatment. They should not be used to treat an ailment without prior consultation with a licensed veterinarian. You should always consult with your veterinarian before beginning any course of treatment.

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