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200+ Scientific Studies
Monthlees Verified®
Get 63% off with Membership
4.9/5 | #1 Rated At-Cost Supplements
CardioCal™
$32.02USD
| Member Price:
$11.86USD
63% off
Daily D3 + K2 calcium support for strong bones and healthy calcium balance.
Both vitamins D3 and K2 are essential to the body's function and overall health. Vitamin D3 aids in absorbing calcium and phosphorus, which are essential for bone formation and maintenance.
In addition to supporting the development of strong bones, Vitamin K2 may also benefit the cardiovascular system since it may promote healthy blood clotting.
Unlock member pricing: Save 63% with a Monthlees membership.
Try monthlees products for 30 days!
We stand 100% behind every product we make. Try monthlees supplements for 30 days and if you're not satisfied, contact our friendly support team at support@monthlees.com to discuss a refund, returns, & store credit options.
Third-Party Tested
GMP Certified
Non-GMO
FDA Compliant
Quality Guaranteed
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Why Use CardioCal™?
CardioCal™ combines calcium, vitamin D3, and vitamin K2 in a convenient capsule to support bone strength, calcium balance, and overall skeletal health.
Supports bone strength
Provides key nutrients like calcium, vitamin D3, and vitamin K2 that work together to support strong bones and overall skeletal health.
Helps maintain calcium balance
Vitamin D3 supports calcium absorption, while vitamin K2 helps direct calcium into bones and away from soft tissues.
Third-party tested quality
Every batch is tested for purity and potency, so you get exactly what’s on the label in every capsule.
In One Serving of CardioCal™
CardioCal™ complements a healthy diet. It's easy to incorporate into any lifestyle or health regimen without overdoing it.
SERVING SIZE1 capsule
Calcium
Vitamin D3
Vitamin K2 (MK-7)
BioPerine® (Black Pepper Fruit Extract)
FREE OF
- Artificial Sweeteners
- GMOs
- Gluten
DIET FRIENDLY
- Vegan
High-quality ingredients
Every serving of CardioCal™ works to deliver comprehensive daily nutrition with ingredients that are carefully sourced for absorption, potency, and nutrient density.
Calcium
Provides the foundational mineral for strong bones and teeth.
Vitamin D3
Supports calcium absorption from the gut and plays a key role in bone health and immune function.
Vitamin D3 is widely studied for its role in bone density, calcium balance, and immune support.
Vitamin K2 (MK-7)
Helps direct calcium into bones and away from soft tissues by activating vitamin K–dependent proteins.
Vitamin K2 (MK-7) is studied for its role in supporting bone mineralization and healthy calcium handling.
BioPerine® (Black Pepper Fruit Extract)
Commonly used to support nutrient absorption and bioavailability.
See The Difference
monthlees vs. The Competition
Why pay more for less? See how we stack up.
| Feature | monthlees | Retail Brands | Amazon |
|---|---|---|---|
| Price | Wholesale cost | 300-500% markup | 150-300% markup |
| Third-Party Testing | Sometimes | Rare | |
| Clinical Doses | |||
| Full Ingredient Transparency | |||
| Certificate of Analysis | |||
| Free Shipping Options | Prime Only | ||
| Member Savings | 50-70% | 0% | 10-20% |
| Cancel Anytime | N/A | N/A |
Price
monthlees
Wholesale costRetail
300-500% markupAmazon
150-300% markupThird-Party Testing
monthlees
Retail
SometimesAmazon
RareClinical Doses
monthlees
Retail
Amazon
Full Ingredient Transparency
monthlees
Retail
Amazon
Certificate of Analysis
monthlees
Retail
Amazon
Free Shipping Options
monthlees
Retail
Amazon
Prime OnlyMember Savings
monthlees
50-70%Retail
0%Amazon
10-20%Cancel Anytime
monthlees
Retail
N/AAmazon
N/ABased on industry research and publicly available data for mass-market supplements.
Daily D3 + K2 calcium support for strong bones and healthy calcium balance.
Real Members, Real Savings
See why thousands of health-conscious & budget-conscious buyers trust Monthlees
Michael R.
Austin, TX
I was spending over $300/month on supplements from various brands. With Monthlees, I get the same quality — actually better, since everything is tested† — for less than half. My stack costs me $120 now.
Monthlees Plus Member
Sarah K.
Denver, CO
As someone deep into the longevity space, I appreciate that Monthlees only carries clinically-dosed products. No mystery ingredients. Just transparent, effective† supplements at fair prices.
Monthlees Core Member
David L.
Seattle, WA
I've tried every subscription box and DTC brand out there. Monthlees is different — it's like Costco for supplements. I'm saving 50%+ on my monthly† essentials without compromising on quality.
Monthlees Plus Member
Jennifer M.
Miami, FL
The transparency is what sold me. I can see exactly what's in each product, where it's sourced, and the testing results. Plus the savings are incredible.† My husband and I both use Monthlees now.
Monthlees Core Member
Chris T.
San Diego, CA
As a biohacker, I was skeptical because I'm used to paying an arm and a leg for supplements. But the quality is legit — these are premium formulas† at wholesale prices. The membership pays for itself in my first order every month.
Monthlees Plus Member
