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If you grew up seeing Got Milk? ads, you probably remember how calcium is vital for bone health. And while, yes, you can find calcium in dairy, it’s not always easy to get all the calcium you need—especially if you are vegan, have a sensitivity, or experience illnesses like IBD or celiac disease.

Adult women are recommended to have 1,000-1,300 mg of calcium a day, per the Mayo Clinic and the National Institute of Health. If you have a calcium deficiency and can’t solve it through diet alone, consider these calcium supplements below to help close the gap—some start at 100 mg for those who need just a tad more, while others offer upwards of 750 mg in each serving.

And as always since over-ingesting calcium can cause issues, too, we recommend speaking with your primary physician to figure out what serving is right for you.

1. Thorne

American made
Cruelty free

Best For | High-absorbing calcium
Natural Ingredients | Calcium, hypromellose capsule
Price | $19-$34 for 1-2 month supplies; discounted subscriptions available

Dedicated to personalized, scientific wellness, Thorne combines clinical research, wellness tests, and brand collabs like ones with the Mayo Clinic for its incredible products. The company sells nearly 200 products made to support a variety of needs, from energy and cognition to bone and joint issues. Depending on your preference, you can try the main calcium supplement or the versions with vitamin C, magnesium, or advanced bone support—all are under $35. The Calcium supplement uses 250 mg of chelated calcium per serving so it’s more concentrated and more highly absorbable. Thorne products are rigorously tested, made with clean ingredients, and can be found both online and in stores like Target and Vitacost (the “Calcium D-Glucarate” option, specifically).

2. AG1

Climate neutral
Plant trees
Recycled materials

Best For | Calcium plus gut health
Natural Ingredients | 75+ vitamins & minerals, superfood complex, probiotics, mushroom complex, plant extracts
Price | $99 for 1-month supply; discounted subscriptions available

AG1 by Athletic Greens is a daily supplement that contains 75 fully-traceable vitamins, minerals, and nutrients all in one scoop—yes, including 118 mg of calcium with each serving. This comprehensive formula works for nearly every diet, since it’s vegan, paleo, and keto-friendly. Plus, AG1 is created in a TGA-registered facility and NSF-certified so every batch is tested to be as clean as possible. And the company aims to be green ‘n clean too, with multiple sustainability initiatives. Loved by health experts and athletes like neuroscientist Andrew Huberman, Peloton instructor Robin Arzón, and Formula 1 champion Lewis Hamilton, it’s the simplest way to get everything you need for a better body inside and out.

3. MaryRuth Organics

Woman owned
Budget friendly

Best For | Calcium gummies
Natural Ingredients | Organic tapioca syrup & cane sugar, organic sunflower oil, pectin, vitamins K2 & D3, calcium, sodium
Price | $33 for 60 gummies (1 daily); discounted subscriptions available

Started by a mother-daughter duo, the “MaryRuth” MaryRuth Organics is MaryRuth Ghiyam, a certified health educator and nutritional consultant. After noticing a gap in the supplement industry, she set out to create her own multivitamins and supplements that are vegan and non-GMO—and the K2+D3 Calcium Gummies are definitely a winner in our book. They come in a tasty flavor (peach mango apricot), are kid-friendly, and don’t contain any gelatin or gluten. The D3 and K2 vitamins help the 100 mg calcium absorb quickly and effectively, and with just one gummy a day, you’ll feel the difference in just a few weeks. Based in Los Angeles, you can purchase online, check out their Find a Store section, or pick up your own gummies at  Target, Vitamin Shoppe, or Vitacost.

4. AlgaeCal

Small business
Recycled materials

Best For | Increasing bone density
Natural Ingredients | Plant-based calcium, 13 minerals, vitamins D3, K2-7, & C
Price | $49-$69 for 1-month supply; discounted subscriptions available

If you want to supercharge your calcium intake, we recommend AlgaeCal which contains a whopping 720-750 mg of calcium in every capsule. Leveraging red algae (called lithothamnion superpositum) hand-harvested from South America, this powerful formula contains over a dozen minerals known to support bones and joints including calcium, boron, manganese, and zinc. If you are particularly focused on stopping bone loss, try out AlgaeCal starting at $49/mo and if you want to increase your bone density, opt for AlgaeCal Plus, though you can get a bundle for $89! These supplements are sustainably sourced, clinically supported, and sold with a Stronger Bones for Life guarantee—plus, AlgaeCal supports Plastic Bank to stop plastic waste from entering the oceans.

5. Natural Vitality CALM

Budget friendly

Best For | Magnesium & calcium drink powder
Natural Ingredients | Organic natural lemon & raspberry flavors, organic stevia, vitamins C & D, magnesium, calcium, potassium, boron
Price | $25 for 8 oz; discounted subscriptions available

If you lead an active lifestyle and want to up your calcium intake, you’ll love Natural Vitality CALM’s supplement that combines 320 mg of magnesium and 210 mg of calcium in one delicious powder mix. (Don’t worry, if the raspberry lemon flavor isn’t your thing, the brand offers an unflavored one, too.) By balancing magnesium and calcium, you can enjoy strong teeth and bones and calm nerves and reduce pains. This formula is non-GMO verified, vegan, and contains organic ingredients. You can find this supplement online or at Target, Vitamin Shoppe, and Vitacost—so go ahead and give it a try. Your whole body will thank you.