Build the Habit
Attach it to the meal you never skip. D3 and K2 are fat-soluble and HMB is studied as a consistent daily intake, so the routine is the whole mechanism — one time of day, with food, no gaps.

Developed Alongside Clinicians, Backed by Real Science.
We don't do underdosed formulas. Every ingredient is included at the levels used in real research — not trace amounts.
Dr. Sarah Whitman, CNS
Protects muscle from breakdown during intense training — so more of the work you put in turns into results.
As the active metabolite of leucine, HMB slows muscle-protein breakdown and supports protein synthesis.
Supports bone strength, immune defense, and muscle function.
Helps your body absorb calcium and phosphorus for bone and immune health.
Calcium builds the frame you train on — but only if it ends up in the right place. Vitamin K2 (MK-7) directs calcium into bone, where it strengthens your skeleton, instead of letting it settle in soft tissue.
K2 activates the proteins that manage calcium: osteocalcin pulls calcium into the bone matrix, and matrix Gla protein helps keep it in bone rather than arterial walls. The MK-7 form stays active in your bloodstream for days, so one daily serving keeps working.
HMB (beta-hydroxy beta-methylbutyrate) is a metabolite of the amino acid leucine. Research summarized by the International Society of Sports Nutrition describes a dual action — supporting muscle protein synthesis and suppressing muscle protein breakdown — through a pathway independent of leucine sensing.
Vitamin D3 (cholecalciferol) supports the intestinal absorption of calcium and the maintenance of normal muscle function. It is fat-soluble, which is why this formula is designed to be taken with a meal.
Vitamin K2 supports the carboxylation of osteocalcin and matrix Gla protein — vitamin K-dependent proteins involved in normal bone mineralization. [VERIFY/INSERT: confirm the K2 form (MK-7 or MK-4) and mcg per serving; MK-7 has a longer half-life and is the form used in the long-duration trials.]
Quality you can trust. Boscent products undergo independent third-party laboratory testing to help verify quality, purity, and consistency. We hold every product to rigorous quality standards so you can feel confident about what’s inside every bottle.
Attach it to the meal you never skip. D3 and K2 are fat-soluble and HMB is studied as a consistent daily intake, so the routine is the whole mechanism — one time of day, with food, no gaps.
Three months is where the published research on these ingredients starts reporting. This is a long-horizon formula: the things it supports — muscle maintenance, calcium absorption, normal bone structure — are measured over seasons, not weeks.
The trials behind these ingredients ran for a year and longer. Muscle and skeletal structure are not a twelve-week project — they are the return on a habit you kept when nothing dramatic was happening.
Expert-Formulated
Developed alongside qualified experts and grounded in published research.
Researched Compounds
HMB, vitamin D3 and vitamin K2 each have a substantial controlled-trial literature behind them — studied individually, at defined doses, in defined populations.
Third-Party Tested
Every production run goes to an independent laboratory for identity, potency and contaminant testing before release.
Skeletal Superiority: How HMB and Vitamin D3 Combine to Enhance Lean Mass and Strength
Muscle Growth
Long-term Effects of Calcium β-Hydroxy-β-Methylbutyrate and Vitamin D3 Supplementation on Muscular Function in Older Adults With and Without Resistance Training: A Randomized, Double-blind, Controlled Study
Read MoreTargeted Tissue Protection: Preventing Muscle Wasting and Accelerating Recovery with HMB + D3
Bone Health
Small-Scale Randomized Controlled Trial to Explore the Impact of β-Hydroxy-β-Methylbutyrate Plus Vitamin D3 on Skeletal Muscle Health in Middle Aged Women
Read MoreSkeletal Synergy: The Crucial Role of Vitamin D3 and K2 in Directing Calcium to Bone Matrix
Muscle Recovery
The Importance of Vitamin K and the Combination of Vitamins K and D for Calcium Metabolism and Bone Health
Read MoreReal People, Real Results
Most D3+K2 products stop at two ingredients and never tell you which form of K2 is inside. Here is what to check.
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Generic D3+K2
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HMB+D3
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|---|---|---|---|
| Includes3,000mg HMB for muscle | |||
| K2form specified (MK-7 vs MK-4) | |||
| Amountof each active stated on label | |||
| Third-partytested | |||
| COA(Certificate of Analysis) | |||
| Potencyguarantee | |||
| Manufacturing standard |
GMP-Certified Manufacturing
Third-Party Lab Tested for Purity
Formulated by Naturopathic Doctors
GMP-Certified Manufacturing
Third-Party Lab Tested for Purity
Try Boscent risk-free. If you don’t love the results, we’ll refund you in full — no questions asked.
A full quarter, covered. This is a long-horizon formula — give it the time the research gave it, and if it isn’t for you we refund it.
Prefer to start month to month? The monthly plan carries the same refund promise on your first order.
Because they do three different jobs on the same system. HMB is studied for muscle protein turnover. D3 supports calcium absorption and normal muscle function. K2 supports the vitamin K-dependent proteins involved in directing calcium into bone. Muscle and skeleton carry the same load — this formula supports both rather than making you buy two bottles.
D3 helps you absorb calcium. K2 supports the proteins involved in getting that calcium into bone. Taking D3 on its own addresses one half of the process, which is why the two are so often formulated together.
Adults who want to support muscle and skeletal structure as they age — whether or not they train. Notably, the research on HMB with vitamin D3 in older adults included participants who were not following an exercise programme.
Take 4 capsules daily with a meal that contains some fat — D3 and K2 are fat-soluble and absorb better with food. Same meal every day is the easiest way to never miss one.
Yes. Every batch is independently lab-tested for purity and potency, and a Certificate of Analysis (COA) is available on request. Our products are manufactured in a GMP-certified facility.
If you take an anticoagulant such as warfarin, speak with your healthcare professional before taking any vitamin K product. Not intended for people under 18, or those who are pregnant or nursing. If you take prescription medication or have a medical condition, check with a qualified healthcare professional before adding anything new.