The formula
Slim Metrix Ingredients: What Is in Each Capsule
Slim Metrix has ten ingredients: two minerals with printed amounts and an eight-part blend.
Each capsule lists zinc 5.5 mg and chromium 50 mcg, plus a 276 mg blend of alpha lipoic acid, green tea extract, milk thistle, berberine HCl, resveratrol, cayenne, Korean ginseng and banaba. There is no cinnamon.
For the full label panel, see the Supplement Facts.
Written by the Slim Metrix editorial teamUpdated
Side by side
What ingredients are in Slim Metrix capsules?
Two minerals with amounts, then eight blend ingredients with none. Here they are in the order the label prints them.
| Ingredient (label name) | Per capsule | What research used | Evidence |
|---|---|---|---|
| Zinc (as zinc gluconate) Highlighted | 5.5 mg (50% DV) | Daily need 11 mg (men) or 8 mg (women); adult upper limit 40 mg | A nutrient need, not a weight-loss aid (NIH ODS: zinc fact sheet) |
| Chromium (as chromium picolinate) Highlighted | 50 mcg (label: 41.67% DV; about 143% of today's 35 mcg DV) | Weight trials: about 0.5 to 1.1 kg more loss than placebo | Very small, of debatable relevance (NIH ODS: chromium fact sheet) (Onakpoya et al.: chromium and weight (meta-analysis)) (Tsang et al.: chromium and body measures (meta-analysis)) |
| Alpha lipoic acid | Part of the 276 mg blend (not disclosed) | No weight-loss dose cited on this site | Not reviewed for weight here (MSK About Herbs: alpha-lipoic acid) |
| Green tea (Camellia sinensis) leaf, 98% polyphenols, 80% catechins, 50% EGCG Highlighted | Part of the 276 mg blend (not disclosed) | Weight reviews: small, often not significant | Small, unlikely to matter clinically (Cochrane review: green tea and weight) (NIH ODS: weight-loss supplements (health professional fact sheet)) (NCCIH: green tea) |
| Milk thistle (Silybum marianum) seed extract, 80% silymarin Highlighted | Part of the 276 mg blend (not disclosed) | Liver-disease trials: no clear benefit | Not studied for weight (NCCIH: milk thistle) (MSK About Herbs: milk thistle) (LiverTox: milk thistle) |
| Berberine HCl (from Berberis aristata root, 97% berberine) Highlighted | Part of the 276 mg blend (not disclosed) | 250 to 500 mg two or three times a day | Small waist and glucose drops; mostly low-quality trials (LiverTox: berberine) (Liu et al.: berberine and metabolic measures (meta-analysis)) (MSK About Herbs: berberine) |
| Resveratrol (from Polygonum cuspidatum root extract 200:1) Highlighted | Part of the 276 mg blend (not disclosed) | Above 500 mg a day for 10 weeks or more | Mixed; no insulin effect in one trial (Asgary et al.: resveratrol and metabolic measures (meta-analysis)) (MSK About Herbs: resveratrol) |
| Cayenne (Capsicum annuum) fruit, 40,000 H.U. | Part of the 276 mg blend (not disclosed) | Effects on energy use and appetite described as small | Small; needs more study (MSK About Herbs: cayenne) |
| Korean ginseng (Panax ginseng) aerial extract, 8% ginsenosides | Part of the 276 mg blend (not disclosed) | 16 trials: small fasting-glucose drop, no A1C change | Inconclusive (NCCIH: Asian ginseng) (Shishtar et al.: ginseng and blood sugar (meta-analysis)) |
| Banaba (Lagerstroemia speciosa) leaf extract, 2% corosolic acid | Part of the 276 mg blend (not disclosed) | Small, short, partly open-label studies | Limited (Miura et al.: banaba and corosolic acid (review)) |
| Cinnamon | Not on the label | Not applicable | Not in the bottle, whatever an ad or image name suggests (Slim Metrix label graphic) |
Seven profiles
What does each Slim Metrix ingredient do?
Each one is sold for something different, such as blood sugar, metabolism or the liver, and the research on most is small or mixed. Tap a card for the details.
-
01
Berberine
Berberis aristata root (Indian barberry)
Per capsule: Not disclosed (part of 276 mg)
Small effects, weak trialsStudied at250-500 mg two or three times a day
Watch forNot in pregnancy or breastfeeding. Interacts with cyclosporine and CYP drugs.
Full profile -
02
Green tea extract
Camellia sinensis leaf
Per capsule: Not disclosed (part of 276 mg)
Small, likely not meaningfulStudied atSmall weight effect in reviews
Watch forA rare, known cause of liver injury.
Full profile -
03
Chromium and zinc
Chromium, Zinc
Per capsule: Chromium 50 mcg · zinc 5.5 mg
Very smallStudied atChromium: 0.5-1.1 kg more than placebo
Watch forChromium may add to insulin or metformin.
Full profile -
04
Milk thistle
Silybum marianum seed
Per capsule: Not disclosed (part of 276 mg)
Not studied for weightStudied atLiver-disease trials, no clear benefit
Watch forAvoid with ragweed-family allergies.
Full profile -
05
Resveratrol
Polygonum cuspidatum root (Japanese knotweed)
Per capsule: Not disclosed (part of 276 mg)
MixedStudied atOver 500 mg a day in human studies
Watch forAsk first if you take a blood thinner.
Full profile -
06
Alpha-lipoic acid
Fatty-acid antioxidant
Per capsule: Not disclosed (part of 276 mg)
Not reviewed for weightStudied atNo weight dose cited here
Watch forMay lower blood sugar.
Full profile -
07
Ginseng, cayenne and banaba
Ginseng, Cayenne, Banaba
Per capsule: Not disclosed (part of 276 mg)
Limited to inconclusiveStudied atSmall, short studies
Watch forGinseng may lower blood sugar; cayenne can irritate the stomach.
Full profile -
--
Cinnamon
Not on the label
Per capsule: none listed
Not in the formulaWhy it is hereOne brand image file is named for cinnamon, and a sales-page testimonial mentions it.
Worth knowingThe label lists no cinnamon. The picture in that file shows matcha green tea.
Read the label
Ad vs label
Why do some ads list only six Slim Metrix ingredients?
Because the seller's short list was written for marketing, not for safety. The label names four more: alpha lipoic acid, cayenne, Korean ginseng and banaba (Slim Metrix label graphic).
Each has its own cautions:
- Alpha-lipoic acid can cause nausea and may counteract chemotherapy or radiation (MSK About Herbs: alpha-lipoic acid)
- Cayenne may raise cyclosporine levels and may affect blood pressure medicines (MSK About Herbs: cayenne)
- Korean ginseng's most common side effect is insomnia (NCCIH: Asian ginseng)
- Banaba has little safety research behind it (Miura et al.: banaba and corosolic acid (review))
By purpose
How do the Slim Metrix ingredients group together?
They fall into four rough groups: minerals, blood sugar, metabolism and the liver.
Blood sugar
Berberine, alpha-lipoic acid, Korean ginseng and banaba. Small or inconclusive effects.
"Metabolism"
Green tea, cayenne and resveratrol. Weight effects were small or seen mostly in rats.
Liver
Milk thistle, never studied for weight.
Clearing it up
Is cinnamon an ingredient in Slim Metrix?
No. Cinnamon appears nowhere on the Slim Metrix label.
The mix-up has two sources. A sales-page testimonial describes the formula as "chromium, berberine and cinnamon" (Sales page, quickslimstep.com/frt), and one brand photo was saved under a file name that mentions cinnamon. Neither one changes the label.
The numbers
How much of each ingredient is in one Slim Metrix capsule?
Only zinc and chromium have printed amounts. The other eight share 276 mg, listed from most to least by weight, with no single weights (FDA: labeling guide (proprietary blends)).
| Zinc | 5.5 mg (50% DV) |
|---|---|
| Chromium | 50 mcg, about 143% of today's DV |
| Whole blend | 276 mg |
| Each blend ingredient | Not published |
If split equally, each would be about 34.5 mg; the real split is not published. EGCG stays under 138 mg in any case, below the 800 mg a day where EFSA saw liver-enzyme rises (EFSA: safety of green tea catechins).
Capsule and fillers
What are the other ingredients in Slim Metrix?
The other ingredients are hypromellose (the vegetable capsule shell), microcrystalline cellulose, magnesium stearate and silicon dioxide (Slim Metrix label graphic).
The sales page also shows "Allergen-free & Clean" and "Paleo-Friendly & Gluten-Free" badges (Sales page, quickslimstep.com/frt). No certifier is named for either; check the full label yourself.
Next step
Which Slim Metrix ingredients should I ask a pharmacist about?
Start with berberine, chromium and green tea. Berberine may raise cyclosporine and tacrolimus levels (MSK About Herbs: berberine), chromium may add to insulin or metformin (NIH ODS: chromium fact sheet), and green tea extract is a rare cause of liver injury (LiverTox: green tea).
Bring all ten names. The side effects page has the full interaction table.
FAQ
Questions about Slim Metrix ingredients
What kind of berberine is in Slim Metrix?
Berberine HCl from the root of Berberis aristata (Indian barberry), standardized to 97% berberine (Slim Metrix label graphic). The label prints it as "HCL". Its amount is not published; it is one of eight ingredients sharing 276 mg, so it sits well below study doses.
Is the green tea in Slim Metrix the same as drinking green tea?
No. It is a concentrated leaf extract standardized to 50% EGCG (Slim Metrix label graphic). Liver injury has been reported mainly with green tea extracts, not the drink (NCCIH: green tea), and LiverTox ties more than 100 cases to extracts (LiverTox: green tea). Ask your doctor first if you have had liver problems.
Is the chromium picolinate in Slim Metrix a concern?
Mainly for people on diabetes medicine. The main caution in the NIH chromium fact sheet is that chromium may add to the glucose-lowering effect of insulin or metformin (NIH ODS: chromium fact sheet). Slim Metrix gives 50 mcg, about 143% of today's Daily Value. If you take diabetes medicine, ask your doctor first.
Is Slim Metrix vegetarian?
The capsule shell is hypromellose, a plant-based material, and the brand shows a vegetarian badge with no certifier named. The label does not say where its magnesium stearate comes from, so strict vegetarians can ask the order desk.
Is Slim Metrix gluten free?
No wheat ingredient appears on the label graphic, and the brand shows a gluten-free badge. No certifier or test is named for it, so if you have celiac disease, ask your doctor and the order desk before you buy.
Why is cinnamon linked to Slim Metrix online?
Because of marketing, not the label. A sales-page testimonial mentions cinnamon and one brand image file is named for it, but that picture shows matcha. The Supplement Facts list no cinnamon (Slim Metrix label graphic), so do not count on Slim Metrix if cinnamon is what you want.
Who wrote this
Written and reviewed by
Plain-language pages built from the brand's label graphic, the sales page and linked medical sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a U.S. stocking partner for Slim Metrix, not by the manufacturer. We earn money when you buy through our order links.
Keep reading
More about Slim Metrix
Supplement Facts
Every line of the Slim Metrix label typed out, with the chromium DV fix and what the label leaves out.
Read moreBerberine
Berberine in Slim Metrix: why one capsule cannot reach a studied dose, and who should skip it.
Read moreSide effects
Side effects of all ten Slim Metrix ingredients, the medicines to ask about, and who should not take it.
Read moreU.S. stocking partner for Slim Metrix
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