Built with British doctors using clinically backed ingredients.
One daily scoop for muscle & bone health that disappears into your morning coffee.
Built with British doctors using clinically backed ingredients.
Strong muscles, strong bones. One daily scoop, straight into your morning coffee.
Long before the fall, the body changes. The grip goes first. The recovery slows. And there's that strain that doesn't quite settle.
Underneath it all: muscle is slipping away faster than the body can replace it. Without it, bones lose the signal that tells them to stay strong.
Hold the muscle, and the bone follows. Lose it, and they both go.
Kept is daily nutrition for the muscles and bones we can't afford to lose.
Try KeptAfter 50, muscle breaks down faster than it rebuilds — and the gap widens every year. Protein and exercise alone can’t stop it. Kept suppresses the signals that drive muscle breakdown, so more of the muscle you’ve earned actually stays as you age.
Your muscle-building response weakens with age — scientists call it anabolic resistance. Kept helps you get more from every workout and every gram of protein you eat, so the rebuild keeps pace with the breakdown.
Strong muscle is bone’s training partner. Every time muscle works under load, it pulls on the bone beneath it — the mechanical signal that tells your bones to stay dense. Protect the muscle, and you protect the bone.
A signal is only as good as the materials on hand to answer it. Kept delivers the building blocks bone is actually made from — so your bones have everything they need to stay dense, strong and resilient. The foundation everything else stands on.
Stronger muscle. Stronger bone. The body you've built, kept for the decades ahead.
Click any ingredient to read the science ↓
Each ingredient was tested alone. Combined, the results get even more compelling:
Apart, they add. Together, they compound.
Everyone knows calcium is essential for bone health. Fewer realise it can't do the job alone.
Without magnesium, vitamin D goes to waste. Without vitamin D, calcium isn't absorbed. Without K2, calcium can end up in arteries instead of bones.
Skip one, the chain breaks.
Think of bone like a wall. Minerals are the bricks. Collagen is the flexible cement that holds them in place — and lets bone bend instead of crack.
Vitamin C makes the cement. Copper sets it. Manganese anchors it to the bricks.
Both, or the wall crumbles.
Real change in muscle and bone isn't something you feel after a week. It works consistently, quietly, over months.
Nothing will feel different yet. That's expected. Your body is building up to effective levels of the active ingredients. The work is happening underneath.
For many, the first benefits start to show — more energy after a long day, recovery feeling quicker after exercise. The jar that fought you last month opens first try.
This is where the clinical research starts to shine. Meaningfully less muscle lost. More strength preserved. Better function in the movements that matter day to day.
Muscle loss doesn't take a break. Neither should the protection. This is where consistency compounds:
Independence, kept.
Kept simple. No taste. No texture. No chalky protein shakes. Just what you already do every morning, plus one scoop.
One level scoop. About a teaspoon and a half. That's your full daily dose.
Stir into your morning coffee, juice, porridge, or yoghurt. It dissolves completely.
Nothing about your morning has changed, except your muscles now have what they need.
The clinical trials show HMB preserves muscle in people who don't exercise at all. But when you add gentle movement, the results compound.
That's why we host a live Pilates class every week — free for subscribers.
"My classes are built for all abilities. All from the comfort of your own home."
One hour a week. Gentle, low-impact, no equipment. Join live or catch up anytime.
Included FreeWe don't believe in anti-ageing. No miracle drugs, no live-forever protocols.
Getting older is a gift — most people in human history didn't get to. The question isn't whether to age. It's how.
Here's what most people miss: frailty isn't healthy ageing. It's what happens when the body stops getting what it needs.
The slow drift into weakening muscles, thinning bones, and lost independence quietly accelerates — but the nutritional gap driving it can be closed.
Kept was built for our mum.
Because she made one thing clear: she refuses to end up like her mother.
Eileen was a force of nature — independent, capable, and always on the go.
She was one of the first British women to go to university and ran her own dental practice for over forty years.
You'd seemingly find her climbing a different mountain every weekend, all whilst raising 3 kids.
Then came a decade of decline.
First came the muscle wastage. Then the falls. Then the fractures — until one left her unable to get out of bed.
She hasn't left her bed since.
An NHS GP and a biochemist. We designed what our mum couldn't buy.
Independence isn't given.
It's kept.
If you don't feel it's for you, we'll refund you in full. No bother. No questions asked.
Dispatched next working day ● 90-day guarantee
Delivered every 3 months. Skip or cancel anytime.
Dispatched next working day ● 90-day guarantee
Delivered monthly. Skip or cancel anytime.
Dispatched next working day ● 90-day guarantee
5% of all profits go to Hope for Justice — fighting child trafficking in the UK.
Officially verified.
The European Food Safety Authority is the EU's independent science regulator. Its job is to decide whether the claims a supplement brand makes are actually backed by science. Most aren't.
Fewer than 10% of claims submitted to EFSA are approved. The health claims on this page carry formal EFSA verification — meaning the science behind them has been independently reviewed and confirmed.
Sarcopenia is the medical term for age-related muscle loss. After 50, your body breaks down muscle faster than it can rebuild it — leading to reduced strength, increased fall risk, and loss of independence over time. Kept is specifically formulated to target this process.
At 3g per day, creatine has a very strong safety record across decades of clinical research. It has been studied in adults over 55 with no adverse effects on kidney function in any published trial. The EFSA reviewed the evidence and authorised a specific health claim at this exact dose. If you have a pre-existing kidney condition, speak to your GP before starting any new supplement.
The NHS doesn't prescribe supplements. Not ours. Not anyone's. That's a policy position about how supplements are classified, not a judgement on whether they work. Absence of prescription is not absence of evidence.
Protein helps build muscle. It doesn't slow the breakdown that accelerates with age. HMB does. They're two separate processes. Protein supports muscle building. HMB directly targets the breakdown. Kept contains HMB at the clinical dose shown to significantly reduce that breakdown, alongside nutrients that strengthen muscles and bones.
Kept contains 1,000 IU of vitamin D. The recommended upper safety limit is 4,000 IU per day — so if taking both keeps you under that, there's no need to change anything.
That said, Vitamin D on its own is only doing half the job. Without K2 to direct it and magnesium to activate it, much of what you take goes unused. Kept isn't a collection of random vitamins — it's a complete system where every ingredient makes the others more effective.
If you take regular medication, we'd always recommend mentioning any new supplement to your GP or pharmacist before starting.
You might not — and that's expected. Muscle preservation isn't something you feel happening. It's the absence of loss. The clinical trials measured outcomes at 3 and 12 months using strength tests and body composition scans, not self-reported feeling. That said, a lot of people do notice everyday tasks feeling easier within the first few months.
Kept stirs into juice, porridge, yoghurt, hot chocolate, Horlicks, or any hot drink. The formula was designed to be no faff — it disappears into whatever you already have each morning.
While Kept is unflavoured, the tannins in some teas can occasionally interfere with how the powder dissolves — if that's the case, herbal teas tend to work better.
We built Kept because people we love needed it. A real problem in our own family that nothing on the shelf solved. If it helps you or someone you love, that's everything.
If you're buying this for a parent or someone close to you, we've included a quick-start guide in every order written for them — what it does and why it's worth sticking with.
If you have any questions, concerns, or just want to talk to someone before ordering, reach out to me directly at benjamin@kept.com. I read every email.
Co-Founder.