- Potent & Science-Safe
- Gentle on the Stomach
- 100% Natural
Product Features
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Food-Based Calcium provides the added bone density support you need every day in one tablet. Formulated with a two-to-one ratio of 500 milligrams of calcium to 250 milligrams of magnesium, this natural vegetarian formula contains stinging nettle, horsetail, and the superfood spirulina to fuel natural energy, buffer minerals, and help with digestion and utilization. Food-Based Calcium is potent, safe, and easy on the stomach. When taken as directed, it can help keep bones healthy and strong.
Calcium can only help aid bone health if it is properly and fully absorbed by bones. Food-Based Calcium provides 500 milligrams of calcium to support strong bones and teeth, plus 250 milligrams of magnesium and 500 IU of vitamin D3 to promote enhanced calcium absorption and retention and support increased bone density. Additionally, vitamin D3 promotes colon and cardiovascular health, and magnesium helps soothe muscle aches and cramps.
20 milligrams each of organic spirulina, horsetail, stinging nettle, and betaine provide natural energy and enhance absorption and digestion without taxing your system or causing stomach upset.
Food-Based Calcium is guaranteed to be 100 percent natural and free of artificial colors, flavors, sweeteners, preservatives, and other additives often found in vitamin products. It's safe for those with most common food allergies because it does not contain sugar, wheat, gluten, yeast, or lactose/dairy. It is also iron free for men and post-menopausal women.
For pure and potent protection, take one tablet per day with meals, or more if desired.
This supplement comes in a 100 percent recycled and recyclable, BPA-free EcoGuard bottle, reducing packaging carbon footprint by 92 percent.
Rainbow Light was founded in 1981 in Santa Cruz, CA. Their mission is to be the performance leader in building a stronger state of health for their customers, the global community, and the planet. Rainbow Light's innovative formulas all begin with a base of nutritious, whole foods and are formulated to deliver research-proven ingredients in optimal potencies and combinations for best absorption, utility, and effectiveness.
From the beginning, Rainbow Light has partnered with Vitamin Angels to fight global malnutrition, providing over 24 million life-saving prenatal and children's multivitamins to women and children in need worldwide since 1996. Rainbow Light also has a long-standing commitment to environmental stewardship and is the first and only supplement brand to offer 100 percent post-consumer recycled, BPA-free EcoGuard bottles that are also 100 percent recyclable.
Food-Based Calcium (180 Tablets).

90 Tablets
180 Tablets
120 Tablets
45 Tablets
120 Tablets
Women, all ages
Women, all ages
Women and children
Women, especially post-menopausal




Spirulina
Horsetail
Alfalfa, red raspberry, stinging nettle
Horsetail, stinging nettle, gotu kola













500
800
1000
1000








Product Details
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Most Helpful Customer Reviews
4 of 4 people found the following review helpful:
5.0 out of 5 stars
Great supplement from a great source,
By Mtsnowfall (Kalispell, MT USA) - See all my reviews
This review is from: Rainbow Light Just Once Food-Based Calcium Tablets 180-Count Bottles (Pack of 2) (Health and Beauty)
I have successfully used these for many years, and the idea that these are only 500mg, which I have been told by a doctor that is all we can realistically absorb at one time, helps me. I take one in the morning and one before bed. It also is nice that it has magnesium, as it is found that women do not get enough of that in their bodies either.And the amount of vitamin D, from again, many more studies does not preclude me taking these, as it is also being claimed women do not get enough sunshine or other forms of it because of extensive use of sunscreen in makeup, lotions, etc. As far as the Soy content, I go out of my way to try not to ingest any in most of my food items, but this just so happens to be as follows: "Contains soy lecithin in vegetable glaze." Here is a list of the ingredients, which I notice are missing from this link - Ingredients Natural Mineral or Vegetable Source Cellulose , Stearic Acid , Modified Cellulose Gum , Magnesium Stearate , Silica , Vegetable Food Glaze Nutrition Facts Serving Size : 1 Tablet Food-based, bioavailable Gentle on the stomach Amount Per Serving % Daily value* Calcium500.0mg 50.0 Magnesium250.0mg 63.0 Vitamin D500.0IU 50.0 Betaine HCI20.0mg Stinging Nettle20.0mg Horsetail20.0mg Organic Spirulina20.0mg Overall a very sound product for absorbtion, and I even have my teen daughters using it twice a day, and they notice a big change in their monthly cycles, as far as lack of pain in cramping, etc. Also, another user noted the following: "easy on stomach Date:March 19, 2011 This calcium/D is food based and does not cause the usual slow bowel like the others." Hope this is helpful! Rainbow Light has been a good source of food-based supplements for me and my family.
7 of 9 people found the following review helpful:
5.0 out of 5 stars
Great Product. Great Price,
Amazon Verified Purchase(What's this?)
This review is from: Rainbow Light Just Once Food-Based Calcium Tablets 180-Count Bottles (Pack of 2) (Health and Beauty)
I started taking these calcium supplements during pregnancy since I wanted to make sure I met my daily requirement. I continue to do so now that I am nursing. I was purchasing this product in the store, but saw that I definitely got more for my money online.
1 of 1 people found the following review helpful:
2.0 out of 5 stars
No warning for pregnant/lactating women??,
By Mommy A (Pennsylvania, USA) - See all my reviews
This review is from: Rainbow Light Just Once Food-Based Calcium Tablets 180-Count Bottles (Pack of 2) (Health and Beauty)
This product contains a small amount of horsetail, which has trace amounts of nicotine. I bought it not having heard anything about horsetail before, but there was no warning against use by pregnant/lactating women on the bottle. However, when I came home and googled the herb there were strong cautions against using it. So I looked on Rainbow Light's website. In their little application to find the right form of calcium for you, if you enter that you are pregnant/lactating, they will not show this product as a recommended form of calcium. This is confusing and not very honest. It would be helpful if they would just write what they think about this product during pregnancy so you can make a decision.
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