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How Can You Tell If a FlexGuard Bottle Is Real? Seal, Label and Lot Checks
Check four things on the bottle in your hand: an intact safety seal, the eight-row panel, a lot code with a best-before date on the base, and the seller. Lot FLE-26/FL-2166 ships from this desk. A lot code traces a batch. It is not a laboratory result and does not prove authenticity alone.

Questions about fakes and real bottles come up for any popular supplement. The good news is that a bottle in your hand gives you more to check than a web page does. Most of it takes under two minutes.
This guide lists what to look for, what each mark proves, and what to do when something does not match.
What does a real FlexGuard bottle show?
Compare your bottle with this list. Each item comes from the printed label as reproduced on this site.
- A Supplement Facts panel with a serving size of 1 capsule and 30 servings per container.
- Eight rows, each with its own amount. There is no proprietary blend.
- Other ingredients: hypromellose (vegetable capsule) and rice flour.
- The allergen line: Contains: Shellfish (Crayfish).
- The suggested use: as a dietary supplement, take one capsule daily.
- A caution, a storage line (a cool, dry place below 30°C or 86°F) and a safety seal notice.
- A line saying it is printed for North Scale, and a made-in line: manufactured in the USA with globally sourced ingredients.
What should the Supplement Facts panel look like?
The image below is the panel as published on this site. If a row on your bottle differs, the bottle is the authority, and the seller wants to hear about it so the page can be corrected.

| Row | Amount per capsule |
|---|---|
| Glucosamine Sulfate | 500 mg |
| Indian Frankincense (Boswellia serrata) (herb) | 67 mg |
| Chondroitin Sulfate | 50 mg |
| Turmeric (Curcuma longa) (root) | 50 mg |
| Quercetin (Sophora japonica) (bud) | 8 mg |
| Methionine | 8 mg |
| Methylsulfonylmethane (MSM) | 8 mg |
| Bromelain (Ananas comosus) (stem) | 8 mg |
The eight amounts add up to 699 mg of active material.

A bottle bought here is matched to lot FLE-26/FL-2166, and the guarantee applies to the whole order.
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Disclosure: this desk earns from orders placed through the checkout on this site. BuyGoods, the retailer at the checkout, shows the current price.
Where are the lot code and the best-before date?
Look at the base of the bottle, or the lower edge of the label. The lot is a short string of letters and numbers. The best-before date usually sits beside it and is often a month and a year, not a full date.
The print is often a faint dot-matrix. A light held at a low angle reads it better than a camera flash. The certificate reference, FLE-2166-26-FL, is not on the bottle. It is a desk record, which is why it appears on this website.
What does the lot code prove, and what does it not?
A lot code is a tracing tool. If one bottle has a problem, the code lets the desk check every bottle from the same production run. That is useful. It is not a security feature and not a test.
| Reference | What it establishes | What it does not |
|---|---|---|
| Lot FLE-26/FL-2166 | Which production run a bottle belongs to | That it is genuine, or what any test found |
| Certificate reference FLE-2166-26-FL | That paperwork exists and can be found | A certificate of analysis you can download and read |
| Best-before date | How long the maker stands behind the stated content | That the bottle was stored well on the way to you |
| Safety seal | That the bottle was not opened after sealing | Anything about what is inside |
Both lot and certificate references are filing references, not laboratory proof.
No independent certificate of analysis for this product is held by this desk. Anyone claiming a lab report is attached to a lot code is claiming something this desk cannot.
What should you do if a bottle does not match?
- A different panel: photograph it and write to [email protected]. The label may have changed, and the page may need correcting.
- A broken or missing seal: do not use it. Call the order desk on +1 (877) 257-0710 the same day.
- A different lot, bought here: call the order desk with the lot and your order ID.
- A different lot, bought elsewhere: that is the other seller's matter, and their policy applies.
- A best-before date that has passed: do not use it.
A different lot is not by itself a warning sign. Production runs change. It simply means this desk cannot tell you anything about that bottle.
Is a listing on a marketplace or a for-sale page the same product?
This desk is the U.S. Stocking Partner, and its checkout is the one place its policies apply. It has no evidence that bottles sold elsewhere are fake, and it will not claim so. What it can say is checkable: a few features show a listing is not this seller's.
- A price outside $49 to $79 a bottle. This seller lists three prices only.
- A single-bottle offer. The smallest pack is two bottles.
- A subscription. Each pack is bought once.
- A returns address other than 180 Maiden Lane, Floor 6, New York, NY 10038.
- A claim that it treats arthritis, or a crossed-out comparison price.
A bottle from another seller carries that seller's policy, not the 60-day policy here. Its storage history is also unknown to this desk.
Does a real bottle mean the product works?
No. Real means the bottle is what it says it is. It does not mean the formula has been proven. No trial of this formula has been run, and only the boswellia row sits near its research amount.
Keep the checkout confirmation too. It carries the order ID and the purchase date, which are the two things a refund needs.
- Check the seal, the panel, the lot with best-before on the base, and who sold it.
- Lot FLE-26/FL-2166 and certificate reference FLE-2166-26-FL are filing references, not laboratory proof.
- The panel has 8 rows, 699 mg in total, and no proprietary blend.
- It declares shellfish (crayfish) and is printed for North Scale.
- Do not use a bottle with a broken or missing seal. Call +1 (877) 257-0710 the same day.
- This seller lists three packs at $49 to $79 a bottle: no single bottle, no subscription.
- The 60-day guarantee applies to orders from this checkout, not to other sellers.
Frequently asked questions
How can I tell if my FlexGuard is real?
Check that the safety seal is intact, the panel shows eight rows with amounts, the lot and best-before date are on the base, and you bought from the official checkout. Call the order desk if anything differs.
Where is the lot number on FlexGuard?
Usually on the base of the bottle or the lower edge of the label, beside the best-before date. The lot this desk ships is FLE-26/FL-2166.
Does the lot code prove it is genuine?
No. It proves which batch a bottle belongs to. It is a record-keeping tool, not a security feature or a laboratory result.
Is the FlexGuard certificate a lab report?
No. FLE-2166-26-FL is a filing reference for the batch paperwork. This desk holds no independent certificate of analysis and does not claim one.
What if the seal is broken?
Do not use the bottle. Call the order desk on +1 (877) 257-0710 the same day, with your order ID, while the refund window is open.
Is a FlexGuard listing on another site fake?
This desk has no evidence of that and will not claim it. It can only say that another seller's returns policy applies, and it cannot confirm the lot or storage of stock it did not ship.
Our view
A real bottle is a bottle you can check against its own label in two minutes. FlexGuard gives you a lot of printed detail to check, and that is to its credit. It does not give you a laboratory report, and we will not pretend a code is one.
If you order, check the seal on the day the parcel arrives, write the purchase date on the bottle, and keep the confirmation email. If anything is off, call the same day. That habit protects your refund better than any logo.

The official checkout lists today's price for each pack and the shipping for your address.
See today's price and guarantee
Disclosure: this desk earns from orders placed through the checkout on this site. BuyGoods, the retailer at the checkout, shows the current price.
FlexGuard is a dietary supplement. It is not a drug, it is not FDA approved, and no dietary supplement is. 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. Ask a doctor about your own health, medicines and joints.
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