Sources

This page maintains the source standards and the current citation map for Nitro Fat Burners. In a supplement niche, citations need to be current, specific, and easy to verify.

How we use this page

• High-intent guides should link to this page and to the most relevant external sources.
• Health claims should point to primary scientific or official-health references whenever possible.
• Product details should be checked against the current brand or retailer page before we link out.

Current citation map

Best Fat Burners

• NIH Office of Dietary Supplements: Dietary Supplements for Weight Loss for ingredient evidence and safety context.
• FDA tainted weight-loss products and FDA dietary supplement guidance for hidden-ingredient and premarket-review context.
• Official pages checked August 23, 2026: Burn-XT, Transparent Labs Body Recomp, Hydroxycut Hardcore, and EVL LeanMode.

Best Non-Stimulant Fat Burners

• Official pages checked August 23, 2026: EVL LeanMode, Transparent Labs Body Recomp Stim-Free, 1st Phorm L-Carnitine, Legion Phoenix Stim-Free, Jacked Factory Lean-XT, and NutraKey CLA 1250.
• Availability noted at the time of checking: Transparent Labs Body Recomp Stim-Free and NutraKey CLA 1250 were shown as sold out.
• The same FDA and NIH references above for ingredient and safety framing.

Burn-XT Review

• PubMed: caffeine and thermogenesis
• PubMed: L-carnitine and exercise/fat utilization
• PubMed: green tea extract meta-analysis
• The current Burn-XT retailer listing linked from the page.

Evidence standards

• Use primary medical or scientific sources for health claims instead of other affiliate sites.
• When referencing ingredients, doses, servings, or stimulant totals, verify the current label image or official listing first.
• Do not publish star ratings, dramatic result claims, or markup that cannot be verified from public data.