RetraBurn Ingredients: The Full List From the Label

The only row on the panel with an amount of its own, and the only one whose figure can be checked against a published Daily Value. Seven micrograms is 20% of 35 mcg, and the panel prints that percentage itself.

Chromium is an essential trace mineral. The work on chromium and body weight is a different literature at a different scale: the Cochrane review pooled 200, 400, 500 and 1,000 mcg a day over twelve to sixteen weeks and described the difference it found as of debatable clinical relevance. a meta-analysis of glycemic control and a dose-response analysis of body composition work in the same range.

First on the blend list, which under the labelling rule for a proprietary blend (21 CFR 101.36) means it carries more weight than anything below it.

Maca has a real trial record, and almost none of it is about weight. A systematic review of menopausal symptoms, one of sexual function and a meta-analysis of semen quality are the three strongest summaries, and none of the abstracts read for this page stated the milligrams its trials used, so no dose figure appears here.

The one entry on the whole panel carrying the 10:1 mark rather than 20:1, which makes it the least concentrated extract in the blend.

It is also the entry with the most category-specific literature. A meta-analysis of anthropometric and cardiovascular outcomes and a systematic review that declined to recommend it reach different conclusions about the same small body of work, and a broader meta-analysis of herbal medicines puts that disagreement in context.

Studied mostly for vascular measures rather than for anything this bottle is grouped around. a dose-response meta-analysis of flow-mediated dilation and sixteen pooled blood-pressure trials are the two to read.

Neither abstract read for this page stated the extract dose used, so the dose column stays empty here rather than carrying a remembered number.

A caffeine-bearing seed, and one of the six the seller puts on the front of the carton. The cognition meta-analysis is the only source on this panel that states a usable range: its trials ran 37.5 to 500 mg of guarana, carrying 4.3 to 100 mg of caffeine.

A cycling time-trial found guarana outperformed low-dose caffeine alone, which is interesting and is about a dose far above what a 15.47 mg blend can contain.

Sometimes sold as Siberian ginseng, and unrelated to panax ginseng lower down the same list. The human record is small and specific: a randomised trial of lymphatic function and oedema and one on alcohol hangover.

No dose was stated in either abstract read for this page.

A traditional tonic root with a thin modern trial record. The most recent relevant work is a randomised trial in resistance-trained adults, which found it moved inflammatory markers without improving muscle function.

That is a careful result rather than a promising one, and it is the honest summary of what is known.

The most-studied plant on this panel by a wide margin. A meta-analysis of EGCG and energy expenditure reported changes in the respiratory quotient from 300 mg of EGCG upward, and a meta-analysis of catechins alongside exercise looked at whether it adds anything to training.

It is also the entry with a safety literature worth knowing about. The LiverTox chapter collects the liver-injury reports at concentrated doses and a 2024 exposure estimate sets out how many US adults take one. The NCCIH page is the plain-English version.

Best known for what it does on the tongue rather than in the gut, and the trial that matters here is a randomised study in adults with impaired glucose tolerance, which used 300 mg twice a day.

Six hundred milligrams a day is roughly thirty-nine times the declared weight of this entire blend, which is the kind of comparison the arithmetic section on the home page exists to make.

The blend member with the most-quoted trial in the category. Godard 2005 gave overweight men 250 mg of a 10% forskolin extract twice a day for twelve weeks, so 500 mg of extract daily, and a 2026 twelve-week trial repeated the design with a branded extract.

Both are real trials at real doses. Both are conducted well above the weight of this whole blend.

The thermogenic entry, and the one whose mechanism is easiest to describe: capsaicinoids raise heat production slightly and briefly. A meta-analysis of thermogenesis in healthy adults and one of capsaicin and capsiate in human studies are the two summaries.

Neither abstract read for this page stated the dose, so none is printed.

Worth separating from grapefruit JUICE, which is the part of the fruit behind the famous interaction with a long list of prescriptions. Grapefruit seed extract is a different preparation with its own problem: an HPLC analysis of eighteen preservatives found synthetic preservatives in commercial grapefruit seed extract.

That is the citation attached here, because a drug-interaction paper about the juice would be describing a different material.

The first entry on the list carrying no concentration mark at all, which means the label is not claiming a concentrate for it. A meta-analysis of cardiovascular biomarkers and a dose-response analysis of blood lipids are the strongest summaries; the NCCIH page is the short one.

No dose was stated in the abstracts read for this page.

The entry with no human evidence to carry. No single-ingredient human trial of raspberry ketones could be found while this page was written. The best available records are a mouse study that failed to reduce adiposity beyond eating less and a trial of a multi-ingredient supplement in which raspberry ketone was one component among many.

Both are cited as exactly what they are, and no claim is made for this ingredient anywhere on this website.

The most abundant free amino acid in the body, and the subject of a pilot study that gave overweight adults 30 grams a day for fourteen days and reported a shift in gut bacteria.

Thirty grams is roughly nineteen hundred times the declared weight of the whole blend this entry sits inside.

Studied under stress and cognitive load rather than for anything metabolic. A review of clinical and healthy populations collects that work, and the cold-exposure trial dosed by body weight at 150 mg per kilogram per serving, which is about 10 grams for a 70 kg adult. One randomised trial looked at inhibitory control.

A nitric-oxide precursor with a clear dose threshold in the literature: a dose-response meta-analysis found blood pressure moved at 4 grams a day and above.

Four grams is about two hundred and fifty-eight times the weight of the blend this entry shares with twenty others.

A sports-nutrition staple, and the one where the honest answer is the most useful. A GRADE-assessed meta-analysis of body composition grouped trials below and at or above 6 grams a day and found body composition moved in neither group. Maximal-intensity exercise is where it does have a record.

A sweetener derived from licorice, and the entry on this panel most worth reading twice. Licorice taken steadily raises blood pressure and lowers potassium: a 2026 review of the mechanism, ten years of French poison-centre reports, the LactMed entry and the NCCIH page between them cover it.

The 15.47 mg ceiling applies here as everywhere, so the practical question is whether licorice also reaches you from anywhere else.

Sold widely and supported thinly. A 2026 review of oral GABA as a functional nutrient is the current summary, and the open question it describes is how much of an oral dose reaches the brain at all.

No dose was stated in the abstract read for this page.

An essential amino acid with a specific manufacturing history attached. a review of the impurities behind eosinophilia-myalgia syndrome sets out why the supplier and the purification route matter for this one more than for most.

No dose was stated in the abstract read for this page.

The last name on the blend list, which under the descending-weight rule makes it the smallest contributor of the twenty-one. A dose-response meta-analysis of thirty-seven trials put the peak effect at 2,000 mg a day, and an umbrella meta-analysis reviewed the reviews.

Two grams a day against a 15.47 mg ceiling shared with twenty other entries.