Flash Burn Review: What's Inside, What the Evidence Says, Who Should Skip It

The quick take

A liquid supplement (drops) built around holy basil (tulsi), olive leaf extract, and an undisclosed "seed blend".
The seller does not publish the amount of each ingredient, so the formula can't be compared or checked against research doses.
There are no published clinical studies on the finished formula.
One-time payment, no subscription, and a 60-day refund window.

How we reviewed it

We read the seller's presentation page, order page and refund terms, then checked published research on each named ingredient. We did not buy, take or lab-test the product. We do not publish star ratings or scores on supplements, because a number would suggest a measurement we did not make, and we do not publish customer testimonials we cannot verify.

Questions or corrections: contact@maxhealthsup.com.

Our honest opinion

Flash Burn is a daily liquid supplement sold as support for metabolism and gut health. The formula is short and the guarantee is real. The big limitation: the company doesn't publish dose amounts per ingredient, so you can't tell whether you're getting an amount that matches any study. If you're considering it, ask the seller for the full Supplement Facts label before ordering, and treat it as an optional extra, never as the plan itself.

What is Flash Burn?

Flash Burn is a dietary supplement that, according to the official page, comes as liquid drops. It's sold online only, through a video and text presentation, in packs of 2, 3 or 6 bottles.

The idea behind it: your gut is home to trillions of bacteria, and the makers believe that when that balance is off, your body has a harder time staying on track. The formula aims to support a friendlier balance. That is the seller's theory, not something shown in a study of this product.

How is it supposed to work?

Two of the ingredients are well-known plants. Olive leaf is rich in plant compounds called polyphenols. Holy basil has a long traditional use for helping people handle everyday stress, and stress can drive snacking.

The honest part: gut bacteria and body weight are an active research area, but scientists are still sorting out cause and effect. No supplement replaces the main drivers: what you eat, how much you move, and how well you sleep.

The ingredients, in plain English

The official page lists three key ingredients. It does not list the amount of each one per serving.

Holy basil (tulsi)

A traditional herb used to help the body cope with everyday stress. Small human studies suggest modest effects on perceived stress; effects on body weight are not established.

Evidence: small human studies

Olive leaf extract

Contains oleuropein, a plant compound with antioxidant properties. Most research is early-stage, and much of it is preclinical.

Evidence: early-stage research

"Bariatric seed" blend

The brand's name for a seed component. The page doesn't disclose which seeds, so we can't assess it.

Evidence: not disclosed

What can you realistically expect?

Possibly calmer evenings. If stress drives late-night snacking, holy basil may help some people feel a little calmer. The evidence is limited and the dose here is unknown.

General wellness support, at best. Olive leaf brings plant antioxidants. Whether that translates to any noticeable effect at this product's (undisclosed) dose is unknown.

No shortcut. Any change in weight will come mostly from diet and activity. Results vary a lot from person to person, and some people will notice nothing.

Who it may suit, and who should skip it

It may suit you if…

You're already improving how you eat and move, and want an optional extra.
You prefer plant-based ingredients over stimulant-heavy pills.
You're comfortable asking the seller for the full label first.

Skip it if…

You expect visible results without other changes.
You want full dose labels and product-specific studies before buying.
You're pregnant, nursing, or under 18.
You take blood-sugar, blood-pressure or blood-thinning medication and haven't asked your doctor.

Pros and cons

Pros

Short ingredient list.
Plant-based, with no heavy stimulants listed.
60-day money-back guarantee.
One-time payment, no hidden subscription.
Free US shipping on the 3- and 6-bottle packs.

Cons

Doses per ingredient aren't disclosed.
One component (the "seed blend") isn't identified at all.
No clinical studies on the finished formula.
Only sold online through the official site.
The refund requires at least 30 days of use first.

Price and guarantee

$79 / bottle2 bottles · $158 + shipping

$69 / bottle3 bottles · $207 · free US shipping

$49 / bottle6 bottles · $294 · free US shipping

Prices as shown on the official page in October 2026. They may change, so check at checkout.

The seller offers 60 days from purchase. Per its terms, you need to have used the product for at least 30 days before requesting a refund. Read the refund terms on the seller's site before ordering.

If you're unsure, start with the smallest pack. Bigger packs cost less per bottle, but only buy what you'll actually use.

Check current pricing on the official site

Opens the seller's presentation page. Packs from $158 to $294 · 60-day money-back guarantee.

Before you start: safety

Don't stop any prescribed medication to take a supplement. Talk to your doctor first if you:

take medication for diabetes or blood sugar. Holy basil may lower blood sugar, which can add to the effect of these drugs;
take blood-pressure medication. Olive leaf extract may lower blood pressure;
take blood thinners (anticoagulants or antiplatelets). Holy basil may slow blood clotting;
are pregnant, trying to conceive, or nursing. Holy basil is generally advised against in pregnancy.

Because doses aren't disclosed, you can't judge how strong these effects might be. Also note: the FDA does not approve dietary supplements for safety or effectiveness before they're sold.

Sources and further reading

Independent references we used to check the ingredient and safety claims on this page. They describe the ingredients in general, not this specific product.

Frequently asked questions

Does Flash Burn work?

There are no published studies on the finished product, and doses aren't disclosed, so no one can say. At most, treat it as an optional extra to a healthier routine. Your diet and activity matter far more.

Are there side effects?

The listed ingredients are generally well tolerated, but any supplement can cause stomach upset or interact with medication (see the safety section). Stop if something feels off, and check with your doctor if you take any medicine.

Is it a subscription?

No. According to the official page, it's a one-time payment with no recurring charges.

Where can I buy it?

Only through the official website. Be careful with copies on marketplaces, since you can't verify where they came from.

Is this the manufacturer's website?

No. MaxHealthSup is an independent, affiliate-supported review site. Our buttons take you to the seller's page, where purchase and customer support happen.

The verdict

Flash Burn is a simple, plant-based supplement with a fair refund policy, but with undisclosed doses, one unidentified component and no product-specific research. Its most plausible effect, a modest one, is on stress-driven snacking via holy basil.

It's only a reasonable try for adults who are already working on their habits, have checked with their doctor if they take medication, and have seen the full label. It's not for anyone hoping for a shortcut.

Verdict: optional at best, with clear caveats.
Good guarantee and short formula; undisclosed doses and no product-specific studies. This verdict comes from desk research, not from testing or customer ratings.

Visit the official Flash Burn site

You'll see a short presentation, then the pack options ($49–$79 per bottle). 60-day money-back guarantee.