Supplements I Discuss With Orthopedic Patients

Patients ask me about supplements almost every day. Most of what is written on the subject either sells them or dismisses them, and neither is much use when you are standing in a pharmacy aisle.

This is what I actually discuss in the office — including where the evidence is genuinely good, where it is mixed, and where a product is being marketed well beyond what the science supports.

The short answer

The two supplements that matter most to your orthopedic outcome are protein and creatine — and neither one is sold as a joint supplement.

That is the part patients do not expect. Both support the muscle around the joint, and muscle is what protects the joint, gets you through rehabilitation, and largely determines how a recovery goes. Everything marketed specifically for joints comes after that.

Protein — the most overlooked supplement in orthopedics

Bone and joint surgery is not only about the joint. Recovery is about maintaining and rebuilding muscle, and that requires the raw material to do it with.

Protein provides the amino acids needed to hold onto muscle during exactly the period when you are moving least. That matters most in the patients who are most at risk of losing it — older patients, patients who have been inactive because of an arthritic joint, and anyone losing weight before surgery.

I most often discuss whey protein, because it is convenient, well studied and a high-quality source. Food first where possible; a shake is a practical way to close a gap rather than a replacement for eating properly.

The important caveat: protein supports muscle when it is paired with actually using the muscle. On its own it does far less. This is the same reason quadriceps strength keeps coming up in knee giving way and in recovery generally.

Creatine

Creatine has better evidence behind it than most things sold as joint supplements, and it is worth understanding why — it is not doing anything to your arthritis.

Creatine supports ATP availability — the energy supply your muscle cells draw on for short, hard efforts. The studies on that mechanism are genuinely good. Combined with resistance training, it supports muscle strength and lean mass in both younger and older adults.

So the orthopedic case for creatine is the same as the case for protein: stronger muscle around a joint protects it and carries you through recovery. It is a muscle supplement, not a joint supplement, and anyone selling it as the latter is confusing the two.

Vitamin D and calcium

These belong together, because vitamin D is what allows you to absorb calcium in the first place.

Vitamin D

Vitamin D is not really an arthritis supplement. It matters for calcium absorption, bone mineralization, bone remodelling and muscle function — which is why it comes up before joint replacement.

The value is in correcting a deficiency, not in taking more once your level is adequate. Large doses on top of a normal level have not been shown to prevent fractures or improve orthopedic outcomes. If bone density is part of your picture, that is covered in bone density and joint replacement.

Calcium

Adults generally need roughly 1,000 to 1,200 mg per day depending on age and sex, and food is the better source.

Magnesium

Magnesium is involved in normal muscle and nerve function, protein synthesis, bone health and a long list of enzymatic processes. It comes up most often for sleep and muscle recovery.

Some studies suggest benefit in both, though the evidence is less established than it is for correcting a genuine deficiency. It is reasonable to try, particularly if poor sleep or muscle cramping is part of what you are dealing with.

Glucosamine and chondroitin

These come up more than anything else on this page, so let me be direct about where I stand.

The literature is mixed. Some studies show benefit, others show none, and professional guidelines do not agree with each other. Anyone telling you the question is settled — in either direction — is going beyond the evidence.

What I can also tell you is that I have a significant number of patients who take glucosamine and get real relief from it. It is a low-risk supplement. You are not doing much harm by trialling it, and if it works for you, that is excellent. Chondroitin sulfate sits in almost exactly the same place.

What neither of them does is rebuild damaged cartilage. Trial them for symptoms if you want to; do not expect them to change the joint.

Turmeric

Turmeric is the supplement I get asked about most often after glucosamine, and it deserves more space than a section here can give it — formulation and bioavailability matter enormously, the doses used in trials are specific, and there are real interactions worth knowing about.

I have written that out in full in does turmeric help arthritis, including where I think it genuinely fits in a nonsurgical plan.

Omega-3 and fish oil

Omega-3 fatty acids have anti-inflammatory properties, and there is evidence for modest improvement in joint symptoms in some patients. They also have broader cardiovascular and metabolic effects, so they are worth considering in the context of your overall health rather than as a joint product alone.

What I would not say is that fish oil treats arthritis or does anything to cartilage. One thing to raise with your physician: higher doses can affect bleeding, which matters if you take a blood thinner or have surgery coming up.

Vitamin C and nerve-related pain

Vitamin C is the one I reach for when nerve-related symptoms are part of the picture, and the reasoning is specific rather than general.

It is required for collagen formation and normal tissue healing. Beyond that, it has been studied specifically around complex regional pain syndrome — a nerve-related pain condition that can follow fractures and extremity surgery.

CRPS is uncommon after hip and knee replacement, but it is not a zero risk. If a patient has any nerve-related issues, I will discuss vitamin C with them — and it is worth starting before surgery rather than after, since the window it has been studied in begins at the time of the injury or operation.

The published evidence on prevention remains mixed, and I would not promise anyone an outcome from it. But it is inexpensive, it is low-risk, and the biological rationale is sound.

What supplements can't do

This is the paragraph I would most like people to take away.

Supplements are one possible component of a plan. Exercise, keeping muscle strength, managing weight, physical therapy, appropriate medication and injections — and a joint replacement when arthritis becomes severe — do considerably more. What is genuinely worth trying first is set out in what to try before a joint replacement.

How to choose one

Worth knowing: supplements do not go through FDA approval for safety and effectiveness the way medications do. What is on the label is not independently guaranteed to be what is in the bottle.

Some carry real cautions: magnesium needs care if you have kidney disease, and higher-dose fish oil can affect bleeding. If you are preparing for surgery, take a list of everything you take to that appointment — it matters more than people expect.