Introduction: DIY Calcium Citrate Supplement

About: Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of, manufacturers of "3D Printer" output devices. His detailed drawings of traditional Pacific I…

Make your own calcium supplements at home from eggshells and lime juice.
Calcium Citrate (w'pedia) is one of the best types of dietary calcium.
Stephanie Simpson demonstrates how to make it.

Her mother had bone spurs. She started to get them. Her doctor advised her to get plenty of calcium. She did some research and started making her own this way.
Her bone spurs went away.

Step 1: Collect Ingredients and Tools

You'll need the following:

If you don't have limes, any fruit with lots of citric acid such as lemons is probably fine as well.
If you don't have eggs, any source of calcium carbonate such as coral, seashells, limestone, or dolomite is probably fine.

Step 2: Concoct

Put the egg in the cup. If the cup fits the egg well, you'll need less juice.
Juice your limes.
Pour the juice over the egg until it's covered or almost covered.
Cover the cup and put it in the refrigerator overnight.

Step 3: Consume

In the morning the eggshell will be much thinner. The liquid will be cloudy.

If you leave it in longer, the eggshell completely dissolves leaving a naked egg. It's pretty amazing. Unfortunately I broke this one before I could take a picture.

Your calcium citrate is ready to use. Take a teaspoon per day.