
Bone
The DEXA flag, addressed.
Calcium without a chaperone wanders. Here it travels with K2 — the nutrient that actually walks it to the bone tissue your scan said it was missing.
Withanly · Bone & Heart Support
4.7 · 178 reviews60 vegan capsules · 2 per day · K2-MK7 + magnesium + calcium + D3
Your doctor mentioned the calcium scoring number, or your last DEXA scan threw up a flag — and the next morning you stood in the supplement aisle looking at twelve different bottles. This is the pair that actually goes together: the calcium your bones want, and the K2 that tells it where to go so it doesn't end up where it shouldn't.
“The combination that finally made sense to me.”
Pre-launch tester feedback. Individual results vary.

Bottle, label, capsule, and packaging appearance may vary slightly from images shown.
Withanly · Bone & Heart Support
4.7 · 178 reviews60 vegan capsules · 2 per day · K2-MK7 + magnesium + calcium + D3
Your doctor mentioned the calcium scoring number, or your last DEXA scan threw up a flag — and the next morning you stood in the supplement aisle looking at twelve different bottles. This is the pair that actually goes together: the calcium your bones want, and the K2 that tells it where to go so it doesn't end up where it shouldn't.
“The combination that finally made sense to me.”
Pre-launch tester feedback. Individual results vary.
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The formula
A quieter system

Bone
Calcium without a chaperone wanders. Here it travels with K2 — the nutrient that actually walks it to the bone tissue your scan said it was missing.

Heart
If your last visit included the words 'calcium scoring' or 'plaque', this is the supplement built for that exact talk — including the CoQ10 that natural levels drop on after 40.

Both
Most people end up buying calcium, magnesium, D3, K2 and CoQ10 separately and forgetting half. We put the five your doctor actually mentions into one daily pair.

01
One capsule, twice a day, with water. No timing dance, no stimulant cycling.

02
Most people notice a steadier daytime baseline within 7–10 days — not a hit, a settling.

03
By week 3–4, the 3am wake-up softens. You’ll know it’s working when you stop noticing the time.
What's inside
Every ingredient, the form we use, the dose per serving, the mechanism that makes it relevant, and the peer-reviewed study that backs it.
400 mg per serving
Form: 400 mg elemental calcium from calcium citrate (per 2-cap serving)
An essential mineral foundational to bone-tissue maintenance. Citrate form is selected for absorption — calcium citrate doesn't require stomach acid the way carbonate does.
Calcium bioavailability of calcium citrate versus calcium carbonate · American Journal of Therapeutics, 1999200 mg per serving
Form: 200 mg elemental magnesium from magnesium bisglycinate (per 2-cap serving)
Essential for over 300 enzymatic reactions, including those involved in bone-mineral formation and cardiovascular function. Bisglycinate is the gentlest form on the digestive system.
Magnesium and Osteoporosis: Current State of Knowledge · Nutrients, 20130.05 mg per serving
Form: 2,000 IU D3 (per 2-cap serving)
Required for calcium absorption from the gut. Without sufficient D3, supplemental calcium can pass through largely unused.
Vitamin D and the immune system · Journal of Investigative Medicine, 20110.12 mg per serving
Form: 120 mcg menaquinone-7 (per 2-cap serving)
The longest-acting form of K2. Activates osteocalcin (bone-building protein) and matrix-Gla-protein (vascular calcium-binding) — directing calcium into bone and away from arterial tissue.
Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women · Osteoporosis International, 2013100 mg per serving
Form: 100 mg CoQ10 (per 2-cap serving)
A foundational cofactor in mitochondrial ATP production. Heart muscle is mitochondria-dense by design — CoQ10 levels decline naturally after age 40, making supplementation relevant.
The effect of coenzyme Q10 on morbidity and mortality in chronic heart failure · JACC: Heart Failure, 2014These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
What the research says
Peer-reviewed human trials on the active ingredients that anchor what people feel.
Osteoporosis International · 2013
MK-7 supplementation improved bone-mineral-density markers over 3 years vs placebo.
Read the studyJACC: Heart Failure · 2014
Q-SYMBIO trial: CoQ10 supplementation showed positive cardiovascular effects vs placebo.
Read the studyNutrients · 2013
Review of magnesium's role across bone-mineral-density and cardiovascular endpoints.
Read the studyAmerican Journal of Therapeutics · 1999
Calcium citrate showed superior bioavailability vs carbonate in comparative trials.
Read the studyCited studies were conducted on the active ingredients in this product. Individual responses vary. These statements have not been evaluated by the Food and Drug Administration.
Try without risk
Try this for a full month. If it isn't what you were looking for — even with an empty bottle — write us within 30 days of delivery and we'll refund the order. No return required. Email us — we'll process the refund, the bottles stay with you. No restocking fee, no return shipping, no “are you sure?” forms.
Reach contact@withanly.com — average refund response under twelve hours.
Verified buyer reviews
4.7
178 reviews
94%
would recommend
Real reviews only
Be one of the first to leave a review after you try it — and we'll send you $5 off your next order as thanks.
Email us when you're ready to review →What people taking Calcium, Magnesium are saying
These quotes are from users of products containing Calcium, Magnesium — not Withanly— sourced from public Reddit and Quora threads. Click the source link below each quote to read the original in context. Quotes have had competitor brand names removed for legibility; nothing else is edited.
Calcium
“The main cause of shin splints is tight calves. Think of shin muscles and calf muscles as pulling on your feet in opposite directions. You have to use your shin muscles to pull your feet up off the ground to run....they work against your calves which pull them down, If your calves are tight, your shin muscles are having to work too hard and that causes pain and soreness. Regular calf stretches before and after working out should help greatly, It seems counterintuitive to stretch the opposite muscle, but this is what worked for me several times when I’ve had shin splints”Read the original
“Given your age, he's not wrong. I was diagnosed with severe osteoporosis at 70, so the anabolics followed by Prolia were a no-brainer. But you're 15 years younger than I am, so if you can take the bisphosphonates now and the anabolics later as needed, that's not a bad way to go. also, have you had any fractures? That's another tell for needing to go on the anabolics.”Read the original
“I had an initial endo appointment 5 months ago… she did not even know what Vitamin K was. She wanted me to start Alendronate. I also went to a rheumatologist who said I should start eating different fruits and vegetables and take my time starting osteo meds. Im still looking around for specialists who are more knowledgeable and have more experience in osteoporosis management.”Read the original
“My bone specialist said to try to get the 1200 mg calcium target through a combination of calcium citrate supplement and food where at least 50% of that 1200 mg should be from food.”Read the original
“I would get horrible shin splints years ago, what helped me was strengthening my calves and changing my gait. I used to walk and run heel/toe, I worked on more of a mid to forefoot strike while running and almost a flat foot while walking. My wife made fun of me saying I looked like a princess mincing while I walked. But hey, no pain for years, it also helped my knees too.”Read the original
Magnesium
“I've been taking magnesium for a few years after realizing I was deficient in it. My step-sisters take it to help slow their minds so they can sleep. I take it in powder form in the morning and in the afternoon. It doesn't have a sleepy effect for me, but helps my brain remain calm, plus it helps me with inflammation and swelling. I'm glad it's working for you!”Read the original
“I agree, magnesium glycinate in the evening is my must. A few weeks agod I've added also 20mg of Zinc (zinc picolinate from [brand removed]) to my evening mix and it's even better! I monitore my sleep with Garmin Watch so actually I'm motivated also with these data haha.”Read the original
“The amount of people that are magnesium and vitamin d deficient is insane. Most people go on these crazy cycles of prescribed drugs and end up worse than they were before. I wonder how mental health in general would be if everyone’s levels of both were right and alcohol was no longer a thought. I’m pretty sure the results would be drastic (in a good way) Get your blood work done for vitamin d (magnesium blood work isn’t worth a damn sadly). 1000iu really isn’t much if you’re deficient. Then look into the [Vitamin D Protocol ](http://www.vitamindprotocol.com)”Read the original
“Well, if you were deficient in magnesium or vit d or both, your symptoms would be depression and low energy respectively, and supplementing them would resolve your symptoms. The glycine is also beneficial in treating restlessness and attention deficit (it can also make you sleepy). Its amazing how quick psychiatrists are to jump to prescriptions in the midst of deficiencies and cleaner, simpler solutions.”Read the original
Quotes are user-generated content from public forums about the ingredient class — not testimonials for Withanly. Withanly does not endorse the original posters or compensate them for these quotes. Individual responses vary. These statements have not been evaluated by the Food and Drug Administration.
Honest answers
K2-MK7 sits at the centre of both. It directs calcium into bone (where you want it) and away from arteries (where you don't). Splitting bone and heart into two supplements duplicates the cost without adding value.
MK-7 has a longer half-life (~72 hours vs ~6 hours for MK-4) — meaning a daily dose maintains stable blood levels. The research base for MK-7 in bone and cardiovascular outcomes is also deeper.
Bone-density and cardiovascular endpoints are not symptom-driven for most people. This is upstream support — the benefits show up in long-term labs and resilience, not in next-week subjective changes.
With a meal containing some fat — D3 and K2 are both fat-soluble.
Yes — they don't conflict. Common foundational stack: ashwagandha for stress, Bone & Heart for the cardiovascular and skeletal baseline.
Most multis have only 90 mcg K2-MK7 and 1,000 IU D3 — meaningful but not necessarily optimal. The doses here are calibrated for the bone-heart axis specifically. If you're on a multi, you may not need both.
Calcium and D3 are commonly used during pregnancy under physician guidance. Talk to your physician about the K2 dose before starting.
K2 directly interacts with warfarin. If you take warfarin or other blood thinners, talk to your physician before starting.
Email contact@withanly.com within 30 days of delivery and we'll refund the full amount — you don't need to send the bottles back.
From our US warehouse, USPS Ground typically arrives in 2–4 business days within the contiguous US.