Guide: metabolism claims
Metabolism Booster Pills: Do Any Supplements Really Boost Metabolism?
Metabolism booster pills are supplements marketed to make the body use energy faster. The sources we found do not show that. A 94-study review found caffeine raised small lab markers of fat metabolism, not body weight. SodaSlim, a capsule with 138 mg of caffeine, carries the words "Metabolic & Appetite Support*" on its label.
Written by the SodaSlim label deskUpdated
The short answer01
Do metabolism booster pills work?
Metabolism booster pills have not been shown to change how many calories you burn in a way that shows up as lasting weight loss. The NIH says there is little scientific evidence that weight-loss supplements work (NIH ODS, Weight loss supplements (consumers)).
Metabolism means how your body turns food into energy. Ads use the word loosely, so "boost" can mean a lab marker, a feeling of energy or real weight change. Those are three different things.
The best check we found for caffeine, the usual ingredient, pooled 94 studies. It saw a small overall rise in fat metabolism markers in the blood and in gas exchange, bigger for blood markers. It did not measure body weight or fat loss (Meta-analysis, Does caffeine increase fat metabolism?).
| Claim in an ad | What studies measured | Result |
|---|---|---|
| Caffeine raises fat metabolism | Blood markers and gas exchange, short term (Meta-analysis, Does caffeine increase fat metabolism?) | Small rise; not body weight |
| Green tea speeds fat use | Weight in overweight adults (Cochrane, Green tea for weight loss (Jurgens)) | -0.04 kg outside Japan, not significant |
| Garcinia changes how fat is made | Weight versus placebo (Onakpoya 2011, Garcinia (HCA) meta-analysis) | -0.88 kg, small, relevance unclear |
| Raspberry ketone raises fat breakdown | Human data (Rao 2021, Raspberry ketone review) | Reliable research lacking |
The wording02
What do metabolism booster ads actually promise?
They promise a faster engine: more energy burned, more fat used, less hunger. The FTC says such claims need competent and reliable scientific evidence, usually randomized human trials (FTC, Health Products Compliance Guidance).
The sales page for SodaSlim says caffeine "immediately awakens the metabolism". It also says raspberry ketone brings an "accelerated reduction in body fat" and green tea "enhances internal fat oxidation" (SodaSlim sales page). These are the seller's words, not ours, and we found no source that supports them as outcomes in people.
Look at how the claim is built. "Awakens" and "enhances" are verbs that sound like results but name no number, no time and no study. The FTC lists claims that sound too good to be true, among them loss no matter what you eat and blocking fat or calorie absorption (FTC, Seven red flags for bogus weight-loss claims).
Words that name a number
"0.88 kg versus placebo in a pooled review" can be checked.
Words that name a feeling
"Awakens" or "ignites" cannot be checked, so they cannot be wrong.
The SodaSlim label03
What does SodaSlim mean by "metabolic" support?
SodaSlim is a capsule, not a drink, and its label front reads "Metabolic & Appetite Support*". The asterisk leads to the FDA statement: not evaluated, not intended to diagnose, treat, cure or prevent any disease.
That is a structure and function phrase. The FDA lets makers use such phrases when they hold support for them and add the disclaimer, but it does not review them before sale (FDA, Structure/function claim notification). One of the three claim lines says "Promotes Energy Production From Fat*". The wording is support, not burning fat, and no study of SodaSlim exists.
The numbered spots on the label below explain each part. On a phone, it scrolls sideways.
Tap a number to read that part of the label.
- Suggested use
As a dietary supplement, take one (1) capsule daily. No time of day, food or water rule is printed.
- Caution
Do not exceed the recommended dose. Not for anyone under 18, pregnant or nursing. Consult a physician first, especially on a medicine or with a medical condition.
- Storage
Store in a cool, dry place below 30°C (86°F).
- Keep out of reach
Keep out of reach of children. Do not use if the safety seal is damaged or missing.
- FDA statement
The asterisk claims have not been evaluated by the FDA. Not intended to diagnose, treat, cure or prevent any disease.
- Made in the USA
'Manufactured in the USA with globally sourced ingredients.'
- Distributed for
Gex Corporation LLP, PO Box 12730, Ogden, UT 84404, +1 (507) 448-8190, [email protected]. The maker is not named.
- Wordmark
SodaSlim, with 'Metabolic & Appetite Support*' under it. The word soda is only a name: this is a capsule.
- Three claim lines
'Supports Craving Control & Satiety*', 'Promotes Energy Production From Fat*', 'Helps Support Healthy Weight Management*'. Each asterisk leads to the FDA statement.
- Three badges
'NON-GMO', 'MADE IN USA with global ingredients' and 'GMP CERTIFIED'. No certifier is named.
- Size
'30 Capsules' and 'Dietary Supplement'.
- Serving
Serving size 1 capsule; 30 servings per container.
- Five lines with amounts
Green coffee bean extract 130 mg, raspberry ketone 130 mg, garcinia extract 130 mg, caffeine anhydrous 138 mg, green tea extract 130 mg. No Daily Values.
- Other ingredients
Hypromellose (vegetable capsule). 'Contains Caffeine.'
The claim lines are tested one by one on the benefits page.
SodaSlim: 30 capsules, 30-day bottle1 capsule a day · 2, 3 or 6 bottles · price and guarantee terms at checkout
See packsThe main ingredient04
How much of the SodaSlim effect is just caffeine?
Caffeine is the largest line on the label: 138 mg per capsule, 21.0% of the 658 mg listed. It is 34.5% of the FDA's 400 mg a day guide for most healthy adults (FDA, Spilling the beans: how much caffeine is too much).
Caffeine is a stimulant, and a stimulant can feel like energy. That feeling is real, but it is not the same as weight change. The NIH says caffeine may help with a little weight loss and that tolerance builds (NIH ODS, Weight loss supplements (consumers)).
The green tea and green coffee extracts carry some caffeine as well. The label does not say how much, so the true total is 138 mg plus a little more. The bars compare the label with reference figures. They are limits, not proven doses.
Count your own coffee and tea on the caffeine content page before you judge a capsule's dose.
Judge it yourself05
How can you judge a metabolism claim before you buy?
Ask what was measured, in whom, for how long, and whether it was the finished product. Four questions cover it.
What was measured?
A lab marker, a feeling or body weight. Only the last is a weight result.
Was the product tested?
Ingredient research does not carry over to a finished product unless the dose and formula match (FTC, Health Products Compliance Guidance). None exists for SodaSlim.
Is the size stated?
A real result has a number, such as a kilogram or less. A vague verb is a warning.
Is a doctor aware?
Ask a pharmacist if you take any medicine. Keep taking prescribed medicine as directed. Chest pain, fainting or a racing heartbeat needs care now.
The guides hub has the other weight supplement topics.
FAQ06
SodaSlim questions people ask
What is a metabolism booster?
A metabolism booster is a supplement or food marketed to raise the energy your body uses. The NIH says little scientific evidence shows weight-loss supplements work (NIH ODS, Weight loss supplements (consumers)). Ads often use the word for a lab marker, a feeling of energy or both.
Does caffeine boost metabolism?
In lab terms, slightly. A 94-study review found a small rise in fat metabolism markers, bigger for blood markers than whole-body measures, and it did not measure body weight (Meta-analysis, Does caffeine increase fat metabolism?). That is not the same as lasting weight loss.
Does green tea extract speed up fat loss?
Not by much. A Cochrane review found -0.04 kg outside Japan, not significant, and the authors judged any loss unlikely to matter (Cochrane, Green tea for weight loss (Jurgens)). Green tea extract pills have also been linked to rare liver injury (NCCIH, Green tea).
Is SodaSlim a metabolism supplement?
Its label front says "Metabolic & Appetite Support*", with the FDA statement attached. No study tested the capsule, so we cannot say it changes your metabolism (FDA, Structure/function claim notification).
Are metabolism boosting supplements safe?
It depends on the ingredients and on you. Stimulants raise heart rate and blood pressure (MedlinePlus, Caffeine), and "natural" does not mean safe (NCCIH, Weight Control and Dietary Supplements). Ask a doctor or pharmacist first, particularly with a medicine or a heart or liver condition.
Can you really change your metabolism?
Not with a pill, as far as the sources we found show. Standard care is eating, activity and, when needed, a provider's program (NIDDK, Treatment for overweight and obesity). Gradual loss of 1 to 2 pounds a week lasts longer (CDC, Steps for losing weight).
Sources (17)
- Spilling the Beans: How Much Caffeine Is Too Much?U.S. Food and Drug Administration, 2024
- CaffeineMedlinePlus (U.S. National Library of Medicine), 2021
- Dietary Supplements for Weight Loss: Fact Sheet for ConsumersNIH Office of Dietary Supplements, 2021
- Weight ControlNational Center for Complementary and Integrative Health, 2017
- Green TeaNational Center for Complementary and Integrative Health, 2025
- Green TeaMemorial Sloan Kettering Cancer Center, 2026
- Green tea for weight loss and weight maintenance in overweight or obese adultsCochrane (Jurgens TM et al.), 2021
- EFSA assesses safety of green tea catechinsInstitute of Food Science and Technology (summary of EFSA opinion), 2018
- The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical TrialsOnakpoya I, Hung SK, Perry R, Wider B, Ernst E, Journal of Obesity, 2011
- Pharmacological Exploration of Phenolic Compound: Raspberry Ketone (Update 2020)Rao S, Kurakula M, et al., Plants, 2021
- Does caffeine increase fat metabolism? A systematic review and meta-analysisInternational Journal of Sport Nutrition and Exercise Metabolism (authors not shown on the record read), 2023
- FTC Stops Bogus Ads for "Bio Trim" and Other Weight-loss ProductsFederal Trade Commission, 2005
- Steps for Losing WeightCenters for Disease Control and Prevention, 2025
- Treatment for Overweight & ObesityNational Institute of Diabetes and Digestive and Kidney Diseases, 2023
- Structure/Function Claim Notification for Dietary SupplementsU.S. Food and Drug Administration, 2023
- Health Products Compliance GuidanceFederal Trade Commission, 2022
- SodaSlim (seller's sales page)SodaSlim (seller), 2026
Who wrote this07
Written and reviewed by
Pages built from the label, the seller’s materials and linked NIH, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site of Thesodaslim, a USA authorized SodaSlim retailer. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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