Cal-Mag Citrate by Thorne Research

Cal-Mag Citrate by Thorne Research

Cal-Mag Citrate by Thorne Research

Regular price $19.00 USD
Regular price Sale price $19.00 USD
Sale Sold out
View full details

An easy-to-consume and tissue-ready combination of calcium and magnesium, plus vitamin C.

Cal-Mag Citrate helps maintain bone and muscle health.* The addition of vitamin C enhances immune function.*

Cal-Mag Citrate 

Magnesium and calcium work synergistically in the body’s muscle cells – magnesium causes muscle fibers to relax, while calcium causes them to contract – helping to prevent muscle cramping and supporting healthy heart rate and rhythm (the heart is a muscle too!).* 

The ratio of calcium-to-magnesium in Cal-Mag Citrate is ideal for individuals who want a higher amount of calcium but, due to magnesium's potential laxative effect, can’t tolerate an equal amount of magnesium.* Because of the highly absorbable forms of these two minerals, you get higher amounts of essential minerals and minimize capsule fatigue. 

Why is calcium important?

  • Studies on calcium and bone mass show that daily supplementation of a well-absorbed form of calcium promotes bone mass in adolescents, young adults, older men, and postmenopausal women.* 

Why is magnesium important?

  • Magnesium is crucial for the body to function properly because magnesium is involved in more than 600 of the body's enzymatic reactions.
  • Magnesium is essential for the health of the heart and blood vessels, brain, bones, muscles, and lungs. It also supports healthy blood sugar levels.*
  • It enhances the relaxation of smooth and skeletal muscles.*
  • Magnesium is a cofactor, along with multiple enzymes, in cellular energy production.* 

Why add vitamin C?

  • Vitamin C promotes optimal immune function.*
  • Vitamin C supports healthy collagen formation, which benefits wound healing and injury repair.*


Linda A.

Help for my bones!

I've recently started taking this because I totally cannot afford what the doctor prescribed for my bone health. I read a lot about it and gave it a try. I won't know exactly how effective it is until my next bone density scan, but it is so much easier to take than a bunch of huge calcium and magnesium supplements. Just a tiny scoop in water, once a day, and that's it. It has a pleasant, effervescent taste. So far, it's a winner!

Nick T.

Great before the gym

I take this in the morning and after I go to the gym and feel great after using it. My joints feel great.

Eric B. 

Best way to get magnesium and calcium into my kids

My picky teen loves to put this stuff into his drink concoctions. It's hard to get him to take anything so this form and flavor is a really good one for our daily regimen.

Merri A.

Cal-Mag Citrate plus hemp oil worked

A bed-bound patient who only received tube feedings suddenly began having painful cramping due to contractures resulting from almost three years of being in bed, even with daily PROM, bid Baclofen, and Tylenol. The addition of Cal-Mag Citrate and the hemp oil made him feel better in less than 48 hours.

Amy L.

My Favorite

Finally, the perfect calcium-to-magnesium ratio. Thorne makes products that make me feel good and that I can feel good about. The fizz of this gets me excited to take these two essential minerals! Thanks, Thorne!

Mathew G.

Like it

Not to bad in water. I use when I want to recover

Angela K.

No more leg cramps

Good taste. I also like that it’s lightly carbonated.


How to Use

Mix 1 scoop with at least 8 ounces of water daily or as recommended by your health professional.

Key Ingredients

Vitamin C

Ingredient Amounts:

Serving Size: 1 Scoops
Servings Per Container: 40

Name Amount
Calcium (Ascorbate/Citrate) 500mg
Magnesium (Ascorbate/Citrate) 200mg
Vitamin C (Ascorbic Acid) 500mg
Other Ingredients: Glycine


This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. 


If pregnant, consult your health professional before using this product.


There are no known adverse interactions or contraindications at publication date.


Consuming this product can expose you to chemicals, including lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

Customer Reviews

Based on 1 review Write a review

You may also like