I heard Strontium is unsafe. Is that true?

No. It’s totally safe. In a 7-year clinical trial, participants taking Strontium Boost & AlgaeCal Plus (Bone Builder Pack) saw consistent bone density increases year after year—with zero reported adverse side effects.

How is AlgaeCal Bone Builder Pack different from other algae calcium supplements?

It’s the ONLY calcium supplement in the world clinically supported to increase bone density. And that’s also why AlgaeCal is the ONLY calcium supplement that offers a results-based promise.

What about side effects?

The ingredients in AlgaeCal Bone Builder Pack are easy to digest and gentle on your body. In a 7-year clinical trial researchers found “no evidence of adverse side effects.” *J Am Coll Nutr, 2016

What’s the difference between AlgaeCal, AlgaeCal Plus, & Bone Builder Pack?

AlgaeCal is for those who want to stop bone loss. AlgaeCal Plus is for those who want to increase bone density. And the Bone Builder Pack? It’s for those who want to increase bone density in just 6 months—guaranteed.

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ALGAECAL Bone Builder Pack, Calcium + Strontium for Bone Density, 1 Month | Plant calcium (720mg) plus strontium, D3 (1600IU), K2 (100mg), magnesium (350mg) & 16 nutrients for bone density support.

ALGAECAL Bone Builder Pack, Calcium + Strontium for Bone Density, 1 Month | Plant calcium (720mg) plus strontium, D3 (1600IU), K2 (100mg), magnesium (350mg) & 16 nutrients for bone density support.

Product ID: 142411232

Details

Brand
ALGAECAL
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Capsule
Item Weight
10.24 ounces
Item dimensions L x W x H
6 x 4.5 x 2.5

⚡1600IU vitamin D3 for absorption

🔬Clinically proven bone density boost

🦴720mg plant-based calcium

€ 235.65

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

🦴 Build stronger bones, faster—because your future self deserves it!

EFFORTLESS DAILY ROUTINE - Veggie capsules made in the USA, designed for busy professionals who demand clean, effective supplements.
STRONTIUM BOOST ADVANTAGE - Slows bone loss cells and accelerates density gains—science-backed and safe over 7 years.
16 ESSENTIAL BONE NUTRIENTS - Beyond calcium—includes magnesium, zinc, vitamins D3, K2 & C for comprehensive bone health.
PLANT BASED GENTLE FORMULA - Organic red algae calcium that's easy on your stomach, non-GMO, dairy, soy & gluten-free.
CLINICALLY PROVEN BONE DENSITY BOOST - Increase bone strength in just 6 months with a unique combo of AlgaeCal Plus & Strontium Boost.

ALGAECAL Bone Builder Pack combines 720mg of plant-based calcium with 16 bone-supporting nutrients including magnesium, vitamins D3 (1600IU) and K2, plus Strontium Boost. Clinically proven to increase bone density in as little as 6 months, this non-GMO, vegan-friendly formula is gentle on digestion and free from common allergens, making it the smart choice for proactive bone health.

Reviews

User

Truly effective

This is a GREAT product! I've been taking this for a while now - but around seven months of taking this I had another bone density scan - it showed improvement in that short of time! I don't suspect this product is affective, it's been proven out! Thank you!

10.08.2026

User

Bone density improved

I honestly never review stuff but I just want to help others. I started feeling hip pain. I got scan I my bones were bad for my age. I have been taking this for a couple of years and my scan show slight improvement which is rare with bone density. I just did another last month is is on the normal side for my age.

24.04.2026

User

Health is wealth

This costly but worth it

8.07.2026

User

Incredible Customer Service

I've been taking AlgaeCal since January due to osteoporosis in my spine. I recently contacted customer service to return a twin pack after my doctor asked me to stop taking Strontium because it can artificially improve DEXA scores. The customer service was incredible! They responded within 24 hours and after reviewing my purchase they refunded me and told me I didn't have to return the product. I will absolutely keep taking AlgaeCal Plus (without Strontium) and report back on my DEXA in January 2027, but 5 stars for incredible customer service!

27.07.2026

User

Expensive

A little expensive

10.08.2026

User

Good for calcium

Great

10.08.2026

User

Seems to be a good quality product

So far I’ve implemented taking these into my schedule. Won’t know for months if they have helped.

20.07.2026

User

Best

Best product for bone health!

26.07.2026

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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€ 235.65

Duties & taxes included

In stock

Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Finland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Asin	B07MFZSLFZ
Best Sellers Rank	#49 in Calcium Mineral Supplements
Date First Available	January 10, 2019
Item Model Number	Calcium Supplement
Manufacturer	ALGAECAL
Product Dimensions	6 x 4.5 x 2.5 inches; 10.23 ounces

ALGAECAL Bone Builder Pack, Calcium + Strontium for Bone Density, 1 Month | Plant calcium (720mg) plus strontium, D3 (1600IU), K2 (100mg), magnesium (350mg) & 16 nutrients for bone density support.

Details

Details

Description

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Reviews

Common Questions