Major interaction on record — check this product against your medications before combining. Based on 9 of 12 ingredients. Check your meds →
Dietary supplement

Joint Support Formula Ingredients & Drug Interactions

by Klaire Labs

Joint Support Formula label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Joint Support Formula against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Major

Joint Support Formula is a dietary supplement by Klaire Labs with 12 active ingredients. Its ingredients are commonly taken for treating or preventing b12 deficiency, pernicious anemia, low energy and fatigue.Based on those ingredients, 395 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are Sodium, Glucosamine Sulfate Potassium Chloride, Potassium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Joint Support Formula by Klaire Labs

Ask about any prescription or over-the-counter medication and we check it for interactions with Joint Support Formula by Klaire Labs — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Joint Support Formula by Klaire Labs

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 12 of its 12 active ingredients.
  • “Biocell Collagen” is listed as a grouped ingredient — the label gives one combined amount (500 mg) without saying how much of each component you get.

Joint Support Formula contains 12 active ingredients. The main components are chondroitin sulfate (listed twice, once as chondroitin sulfate and once as chondroitin sulfate sodium), glucosamine sulfate potassium chloride, hydrolyzed collagen type II, and hyaluronic acid — all aimed at supporting joint structure and comfort.

It also includes vitamin B12, folate, potassium, sodium, and molybdenum for nutritional support, plus methylsulfonylmethane and bamboo aerial parts extract for additional joint-health properties. Biocell Collagen is included as a blend of collagen components.

The capsules also contain inactive ingredients: hydroxypropyl methylcellulose (the capsule material), water, and L-leucine.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: joint support and cartilage health.
  • We looked for evidence on: Aromatase inhibitor-induced arthralgia, osteoarthritis, joint pain, cartilage degradation.
  • The strongest evidence on file: Glucosamine is rated "Likely Effective" for Osteoarthritis (Natural Medicines).
  • Also on file: Chondroitin Sulfate is rated "Possibly Effective" for Osteoarthritis.
  • Also on file: Chondroitin Sulfate is rated "Insufficient Reliable Evidence To Rate" for Aromatase inhibitor-induced arthralgia.

Evidence for this formula's ingredients is mixed. Glucosamine sulfate is likely effective for osteoarthritis, while chondroitin sulfate is possibly effective for both cataracts and osteoarthritis.

Hydrolyzed collagen type II appears possibly effective for aging skin and dry skin, and hyaluronic acid is possibly effective for dry eye and venous leg ulcers. Vitamin B12 is effective for B12 deficiency and likely effective for cyanide poisoning.

Most other uses listed — such as aging skin for chondroitin, osteoporosis, and various other conditions — have insufficient reliable evidence in our data to establish whether they work. Bamboo extract's effectiveness for dental caries is also not established.

Molybdenum deficiency is likely responsive to supplementation, but its use for other conditions lacks sufficient evidence.

The evidence, ingredient by ingredient Vitamin B12 Molybdenum Sodium Chondroitin Sulfate Potassium Hyaluronic Acid Collagen Peptides Glucosamine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 9 of the 9 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 9 of 9.
  • General safety write-ups exist for 9 of 9.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Chondroitin and glucosamine are generally well tolerated for short-term use orally, though the most common side effects are gastrointestinal — bloating, constipation, diarrhea, nausea, and heartburn. Rare serious effects include hepatotoxicity (liver damage) and, in combinations with glucosamine, skin reactions such as rash, hives, and eyelid swelling.

A few cases of asthma exacerbation and photosensitivity have been reported with glucosamine-chondroitin products. Hyaluronic acid is generally well tolerated orally and topically.

Vitamin B12 is very safe with no established upper limit; excess is removed in urine. Potassium and sodium, while essential, can reach dangerous levels if supplemented beyond need, especially in people with kidney disease or on certain medications.

Molybdenum is safe at food levels but high-dose supplements are rarely necessary and carry risks. Bamboo shoots are safe when properly cooked, but supplement safety is not well studied.

Hydrolyzed collagen type II is generally well tolerated with rare mild GI effects.

Side effects, ingredient by ingredient Vitamin B12 Molybdenum Sodium Chondroitin Sulfate Potassium Hyaluronic Acid Collagen Peptides Glucosamine

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 6 of the 9 matched ingredients can interact with medications — Bamboo, Chondroitin Sulfate, Glucosamine, Potassium, Vitamin B12, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications; lithium.
  • For scale: 395 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take warfarin (Coumadin) or another blood thinner, check with your doctor or pharmacist before using this product — glucosamine and chondroitin can increase bleeding risk. Blood pressure medications, lithium, potassium-sparing diuretics, ACE inhibitors, ARBs, corticosteroids, and antidiabetic or antithyroid drugs all warrant a conversation with your healthcare provider before you start, as the sodium, potassium, glucosamine, and bamboo in this formula can interfere with how they work.

If you're on cancer drugs like etoposide or doxorubicin, mention this formula to your oncologist.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

Joint Support Formula may be worth considering if you have osteoarthritis or want broad joint-support nutrition, since glucosamine and chondroitin have evidence for that use. However, you should be especially careful if you take warfarin or other blood thinners, blood pressure medications, lithium, potassium-altering drugs, or antithyroid drugs — the sodium and potassium levels, along with glucosamine and bamboo, create real risks.

Talk with your doctor or pharmacist before starting this formula, particularly if you're on any prescription medications or have kidney disease.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 10 of 12 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Joint Support Formula, straight from the product label.

Brand Klaire Labs
Barcode (UPC) 817234010381
Net contents 120 Capsule(s)
Market status On market
Date entered into DSLD Jan 23, 2023
DSLD ID 280463
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Joint Support Formula by Klaire Labs, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
4 Capsule(s)
Maximum serving Sizes:
4 Capsule(s)
Servings per container
30
UPC/BARCODE
817234010381
IngredientAmount% DV
Total Carbohydrates1 Gram(s)1%
Chondroitin Sulfate100 mg--
Vitamin B1260 mcg2500%
Hyaluronic Acid50 mg--
Folate765 mcg DFE191%
Molybdenum300 mcg667%
Sodium40 mg2%
Chondroitin Sulfate Sodium500 mg--
Hydrolyzed Collagen Type II300 mg--
Potassium140 mg3%
Biocell Collagen500 mg--
Glucosamine Sulfate Potassium Chloride1200 mg--
Methylsulfonylmethane800 mg--
Bamboo Aerial Parts Extract30 mg--

Other ingredients: Hydroxypropyl Methylcellulose, Water, L-Leucine

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Precautions

Caution: If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your healthcare professional before using this product.

Do not use if shrinkwrap is broken or missing.

Formulation

Free of the following common allergens: Milk/casein, eggs, fish, shellfish, peanuts, wheat, and soybeans. Contains no artificial colors, flavors, or preservatives.

Produced under a strict quality management system in compliance with Good Manufacturing Practices (GMPs) and third-party quality certifications.

Suggested/Recommended/Usage/Directions

Suggested Use: 4 capsules, 1 to 2 times daily with food or as directed by a healthcare professional.

Brand IP Statement(s)

Metafolin is a registered trademark of Merck KGaA, Darmstadt, Germany BioCell Collagen is a registered trademark of BioCell Technology, LLC, Irvine, California USA (Protected by Patents).

SFI

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Storage

Store in a cool, dry place (59 degrees F - 85 degrees F) away from direct light.

FDA Statement of Identity

Dietary Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Joint Support Formula by Klaire Labs label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Joint Support Formula label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Joint Support Formula by Klaire Labs

These are the 12 active ingredients this product is made of. Select any to open its full monograph.

Serving size4 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Vitamin B12

Interacts with
20 drugs
60 mcg per serving Form: Methylcobalamin

Vitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very h...

Vitamin B12 monograph & interactions

Folate

765 mcg DFE per serving Form: Metafolin

Molybdenum

No known
interactions
300 mcg per serving Form: Molybdenum Aspartate Complex

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so s...

Molybdenum monograph & interactions

Sodium

Interacts with
205 drugs
40 mg per serving Form: Chondroitin Sulfate Sodium

Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets g...

Sodium monograph & interactions

Chondroitin Sulfate Sodium

Interacts with
2 drugs
500 mg per serving Form: Bovine Cartilage

Chondroitin sulfate is a naturally occurring building block of cartilage that is widely taken, often with glucosamine, for osteoarthritis joint pain....

Chondroitin Sulfate Sodium monograph & interactions

Potassium

Interacts with
62 drugs
140 mg per serving Form: D-Glucosamine Sulfate Potassium Chloride

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanc...

Potassium monograph & interactions

Biocell Collagen

500 mg per serving Form: Chicken Sternal Cartilage extract

Glucosamine Sulfate Potassium Chloride

Interacts with
170 drugs
1200 mg per serving Form: Crab, Shrimp

Glucosamine is a natural compound found in cartilage and joint fluid, and it is one of the most popular supplements for osteoarthritis, especially of...

Glucosamine Sulfate Potassium Chloride monograph & interactions

Methylsulfonylmethane

800 mg per serving Form: OptiMSM

Bamboo Aerial Parts Extract

Interacts with
5 drugs
30 mg per serving Form: Silica

Bamboo is a giant grass whose shoots are eaten as food and whose leaves and silica-rich extracts are sold as supplements, often for hair, skin, nail,...

Bamboo Aerial Parts Extract monograph & interactions

Other (inactive) ingredients: Hydroxypropyl Methylcellulose, Water, L-Leucine. These complete the product’s ingredient list but are not active constituents.

Interaction report

Joint Support Formula by Klaire Labs Drug Interactions

Want to check YOUR meds against Joint Support Formula?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
395Drugs
2 Major 238 Moderate 155 Minor

Ingredients driving the most interactions

Sodium 205
Glucosamine Sulfate Potassium Chloride 170
Potassium 62
Vitamin B12 20
Bamboo Aerial Parts Extract 5

Individual Drug Interactions

The ingredients in Joint Support Formula interact with 395 drugs. Click any drug to see the details.

6 of the 12 ingredients in Joint Support Formula interact with drugs. Each result below shows which ingredient is responsible. Sodium Glucosamine Sulfate Potassium Chloride Potassium Vitamin B12 Bamboo Aerial Parts Extract Chondroitin Sulfate Sodium

Each ingredient & the kinds of drugs it affects

For each ingredient in Joint Support Formula with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Sodium7 drug types · 205 drugs

Antihypertensive Drugs

Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
High intake of dietary sodium can increase systolic and diastolic blood pressure. Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease.

Likelihood Probable Evidence A
Corticosteroids

Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.
Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone.

Likelihood Possible Evidence D
Didanosine (Videx)

Concomitant use of didanosine with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia.
Didanosine formulations contain a significant amount of sodium.

Likelihood Probable Evidence C
Lithium

Altering dietary intake of sodium might alter the levels and clinical effects of lithium.
High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion. Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate. Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L. Patients taking lithium should avoid significant alterations in their dietary intake of sodium.

Likelihood Probable Evidence B
Sodium Phosphates

Theoretically, concomitant use of sodium phosphate with sodium supplements might increase the risk of hypernatremia.
Use of high doses (> 45 mL in 24 hours) of sodium phosphate, such as those used for bowel cleansing before surgery, can lead to serious electrolyte disturbances, including hypernatremia. The risk of hypernatremia is highest in the elderly and people with other risk factors for electrolyte disturbances.

Likelihood Possible Evidence D
Sodium-Containing Drugs

Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.
The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population. Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.

Likelihood Possible Evidence D
Tolvaptan (Samsca)

Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.
Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia. Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.

Likelihood Probable Evidence C
Sodium full monograph & interactions

Glucosamine Sulfate Potassium Chloride4 drug types · 170 drugs

Warfarin (Coumadin)

Glucosamine might increase the anticoagulant effects of warfarin and increase the risk of bruising and bleeding.
In two individual case reports, glucosamine/chondroitin combinations were associated with a significant increase in international normalized ratio (INR) in patients previously stabilized on warfarin. In one case, the increase in INR occurred only after tripling the dose of a glucosamine/chondroitin supplement from 500 mg/400 mg daily to 1500/1200 mg daily. Additionally, 20 voluntary case reports to the U.S. Food & Drug Administration (FDA) have linked glucosamine plus chondroitin with increased INR, bruising, and bleeding in patients who were also taking warfarin. There have also been 20 additional case reports to the World Health Organization (WHO) that link glucosamine alone to increased INR in patients taking warfarin. The mechanism of this interaction is unclear. Glucosamine is a small component of heparin, but is not thought to have anticoagulant activity; however, animal research suggests that it might have antiplatelet activity.

Likelihood Probable Evidence D
Topoisomerase Ii Inhibitors

Theoretically glucosamine may induce resistance to topoisomerase II inhibitors.
In vitro research suggests that glucosamine might induce resistance to etoposide (VP16, VePesid) and doxorubicin (Adriamycin) by reducing inhibition of topoisomerase II, an enzyme required for DNA replication in tumor cells. This effect has not been reported in humans.

Likelihood Possible Evidence D
Acetaminophen (Tylenol, Others)

Acetaminophen might interfere with the activity of glucosamine sulfate by interacting with the sulfate portion.
Anecdotal reports suggest that adding glucosamine to an acetaminophen regimen might decrease pain control in patients with osteoarthritis. Some research suggests that the sulfate portion of glucosamine sulfate might contribute to its effect in osteoarthritis. Since acetaminophen metabolism requires sulfur and reduces serum sulfate concentrations, acetaminophen could theoretically interfere with the action of glucosamine sulfate. Conversely, the administration of sulfate could theoretically decrease the effectiveness of acetaminophen in sulfate-deficient people by increasing its clearance.

Likelihood Possible Evidence B
Antidiabetes Drugs

Despite initial concerns, it is unlikely that glucosamine will interfere with the effects of antidiabetes drugs.
In vitro and animal research has suggested that glucosamine might increase insulin resistance or decrease insulin production. This has raised concerns that taking glucosamine might worsen diabetes and decrease the effectiveness of diabetes drugs. However, clinical research suggests that glucosamine does not have adverse effects on blood glucose or glycated hemoglobin (HbA1C) in healthy, obese, or type 2 diabetes patients.

Likelihood Unlikely Evidence B
Glucosamine Sulfate Potassium Chloride full monograph & interactions

Potassium3 drug types · 62 drugs

Ace Inhibitors (Aceis)

Using ACEIs with high doses of potassium increases the risk of hyperkalemia.
ACEIs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C
Angiotensin Receptor Blockers (Arbs)

Using ARBs with high doses of potassium increases the risk of hyperkalemia.
ARBs block the actions of the renin-angiotensin-aldosterone system and reduce potassium excretion. Concomitant use of these drugs with potassium supplements increases the risk of hyperkalemia. However, concomitant use of these drugs with moderate dietary potassium intake (about 3775-5200 mg daily) does not increase serum potassium levels.

Likelihood Likely Evidence C
Potassium-Sparing Diuretics

Concomitant use increases the risk of hyperkalemia.
Using potassium-sparing diuretics with potassium supplements increases the risk of hyperkalemia.

Likelihood Likely Evidence C
Potassium full monograph & interactions

Vitamin B121 drug type · 20 drugs

Metformin (Glucophage)

Metformin, a common medication used to manage type 2 diabetes, has been associated with lower vitamin B12 levels in some individuals. Prolonged use of metformin can interfere with the absorption of B12 in the digestive system, potentially leading to a deficiency in this essential vitamin.

Likelihood Possible Evidence A
Vitamin B12 full monograph & interactions

Bamboo Aerial Parts Extract1 drug type · 5 drugs

Antithyroid Drugs

Theoretically, long-term bamboo use might increase the effects and adverse effects of antithyroid drugs, possibly leading to hypothyroidism.
Animal research suggests that long-term consumption of bamboo shoot can decrease thyroid peroxidase activity, as well as levels of thyroxine (T4) and triiodothyronine (T3). This effect has not yet been reported in humans.

Likelihood Possible Evidence D
Bamboo Aerial Parts Extract full monograph & interactions

Chondroitin Sulfate Sodium1 drug type · 2 drugs

Warfarin (Coumadin)

Taking chondroitin in combination with glucosamine might increase the anticoagulant effects of warfarin. However, the effect of chondroitin alone is unclear.
There have been multiple reports of increased international normalized ratio (INR) in patients taking warfarin with glucosamine, with or without chondroitin. The lack of reports with chondroitin alone seem to suggest that the interactions occurring in these reports may have been due to glucosamine. In two individual case reports, glucosamine/chondroitin combinations were associated with a significant increase in INR in patients previously stabilized on warfarin. Additionally, 20 voluntary case reports to the US Food & Drug Administration (FDA) have linked glucosamine plus chondroitin with increased INR, bruising, and bleeding in patients who were also taking warfarin. There have also been 20 additional case reports to the World Health Organization (WHO) that link glucosamine alone, without chondroitin, to increased INR in patients taking warfarin.

Likelihood Unlikely Evidence D
Chondroitin Sulfate Sodium full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Joint Support Formula, from the product label.

Klaire Labs

See all Klaire Labs products
Name
SFI USA
City
Reno
State
NV
ZipCode
89521
Web Address
Klaire.com
Pharmacist Counseling Corner

Joint Support Formula by Klaire Labs: Common Questions

Does Joint Support Formula by Klaire Labs interact with any medications?
Yes. Based on its ingredients, Joint Support Formula has a known interaction with 395 medications, including 2 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Joint Support Formula contains 12 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is it safe to take this formula if I'm pregnant?
Chondroitin and glucosamine don't have enough safety data — you should avoid them in pregnancy unless your doctor advises otherwise. Vitamin B12 is considered safe and even needed during pregnancy. Hyaluronic acid and hydrolyzed collagen don't have enough pregnancy data either, so check with your doctor. Molybdenum from regular diet is fine, but high-dose supplements should be avoided unless your doctor says it's okay.
What are the most common side effects I might experience?
The main ones are gastrointestinal: bloating, constipation, diarrhea, nausea, and heartburn. These come mostly from the chondroitin and glucosamine. Potassium and sodium can cause abdominal pain or other digestive upset if levels get too high. Most users report mild or no side effects, but anyone with a sensitive stomach should start cautiously.
Does this formula actually work for joint pain and osteoarthritis?
Glucosamine sulfate is likely effective for osteoarthritis, and chondroitin is possibly effective. Both have evidence, though results vary and benefits may take weeks to notice. Hyaluronic acid and collagen have some support for other uses like skin hydration, but their role in joints is less established in our data.
Can I take this if I have kidney disease?
You should talk with your doctor first. This formula contains potassium and sodium, which can build to unsafe levels in people with kidney problems. Your doctor can advise whether it's appropriate and at what dose.
What's the difference between the two chondroitin ingredients listed?
One is chondroitin sulfate and the other is chondroitin sulfate sodium — they're essentially the same compound, with the sodium version simply having sodium as a component. The sodium content of the formula is important to track if you're on a sodium-restricted diet or take medications affected by sodium.
Is there any ingredient in this formula that you couldn't check for drug interactions?
Yes — we couldn't check folate or methylsulfonylmethane because we don't have interaction data on file for them. That doesn't mean they're unsafe, only that we haven't documented interactions for those two. Your pharmacist can help if you want more information about those specific ingredients.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Joint Support Formula label
Go deeper

The Full Monographs Behind Joint Support Formula’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Vitamin B12

Interacts with 20 drugs

Vitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very helpful for people who are deficient — su...

Read the full Vitamin B12 monograph → Herb & supplement monograph

Molybdenum

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so supplements are rarely needed unless a do...

Read the full Molybdenum monograph → Herb & supplement monograph

Sodium

Interacts with 205 drugs

Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets get more than enough—often too much—from...

Read the full Sodium monograph → Herb & supplement monograph

Chondroitin Sulfate

Interacts with 2 drugs

Chondroitin sulfate is a naturally occurring building block of cartilage that is widely taken, often with glucosamine, for osteoarthritis joint pain. The evidence is mixed—some people report...

Read the full Chondroitin Sulfate monograph → Herb & supplement monograph

Potassium

Interacts with 62 drugs

Potassium is an essential mineral your body needs for nerve signals, muscle function, and a steady heartbeat, and most people get enough from a balanced diet rich in fruits and vegetables. P...

Read the full Potassium monograph → Herb & supplement monograph

Hyaluronic Acid

Hyaluronic acid is a natural substance in the body that helps hold water in the skin, joints, and eyes. Oral and topical products are popular for skin moisture and joint comfort, and the evi...

Read the full Hyaluronic Acid monograph → Herb & supplement monograph

Collagen Peptides

Collagen peptides are a well-absorbed form of protein that may modestly improve skin elasticity and joint comfort for some people, though evidence is still developing and results vary. They...

Read the full Collagen Peptides monograph → Herb & supplement monograph

Glucosamine

Interacts with 170 drugs

Glucosamine is a natural compound found in cartilage and joint fluid, and it is one of the most popular supplements for osteoarthritis, especially of the knee. The evidence is mixed, with so...

Read the full Glucosamine monograph → Herb & supplement monograph

Bamboo

Interacts with 5 drugs

Bamboo is a giant grass whose shoots are eaten as food and whose leaves and silica-rich extracts are sold as supplements, often for hair, skin, nail, and bone support. Solid human evidence f...

Read the full Bamboo monograph →
Sources

Sources & How We Checked

Joint Support Formula's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 178 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Chondroitin Sulfate 22 references
  1. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
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Vitamin B12 30 references
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Collagen Peptides 2 references
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Glucosamine 58 references
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See these in context on the Glucosamine monograph →

Bamboo 4 references
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See these in context on the Bamboo monograph →

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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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