Slim Metrix Side Effects, Cautions and Drug Interactions

the United States Pharmacopeia safety review is the United States Pharmacopeia's systematic review of green tea extract and the liver, and it is the most important single reference on this website. Its findings are worth stating precisely rather than in summary.

• The published case reports associate liver injury with EGCG intakes spanning 140 mg to about 1,000 mg a day, which is a very wide range and points at individual susceptibility rather than a simple dose threshold.
• Taking a bolus dose of extract while fasting significantly increases how much EGCG reaches the bloodstream, probably by saturating first-pass elimination.
• The pattern of injury is hepatocellular.
• USP's response was a labelling requirement rather than a withdrawal: do not take on an empty stomach, take with food, do not use with a liver problem, and stop and speak to a clinician if abdominal pain, dark urine or jaundice appear.

the DILIN green tea analysis adds the reason the risk is so hard to predict. The Drug-Induced Liver Injury Network found susceptibility tracks a specific immune-genetic variant, which is why two people taking the same extract at the same amount can have entirely different outcomes.

Against that, this bottle contains green tea extract inside a 276 mg blend shared with seven other botanicals, so the EGCG content is well below the range the case series describes. The caution is printed here anyway, because a reader is entitled to the same information the monograph requires on a single-ingredient bottle.

Berberine is the row that interacts. Qiu's pharmacokinetic study looked at what it does to the handling of drugs cleared by CYP3A and P-glycoprotein: 30 and 100 mg/kg in rats raised digoxin exposure by 23 to 70 per cent. That is an animal model and is cited here as exactly that.

Hermann and von Richter's interaction review is the clinical picture. It reviews the herbs that act as perpetrators of pharmacokinetic interactions at commonly recommended doses, and it also names milk thistle as a CYP2C9 inhibitor, so two of the ten rows on this bottle appear in it.

Naming a supplement is not the same as being told to stop it. In most cases the answer is that it is fine.

Two other things belong here for completeness. Berberine is poorly absorbed, which is why its own trials used grams. And the amount in this capsule is a share of 276 mg, so the interaction question is smaller here than it would be on a single-ingredient berberine bottle. Smaller is not zero, and the conversation is a short one.

• A dietary supplement, not a drug. A capsule, not a gummy and not liquid drops.
• Not intended to diagnose, treat, cure or prevent any disease, and not FDA-approved.
• For healthy adults aged 18 and over. Not for anyone under 18.
• Green tea extract is the one row on this bottle with a published safety caution attached to it. The United States Pharmacopeia asks for it to be taken with food rather than on an empty stomach, which is worth knowing about a capsule sold for the morning.
• Berberine changes how the gut handles several ordinary medicines. If you take any, the conversation to have is about that, and it is worth having once.
• Do not take more than the label states unless a clinician tells you to.
• Individual results vary. Food, sleep and activity all still matter, and this capsule is not a substitute for any of them.
• Review scores and order counts on this website are the distributor’s own summary figures, not verified transcripts and not evidence.
• Lot SLI-26/SL-5338 and certificate reference SLI-5338-26-SL are filing references, not laboratory proof.
• The website email cannot see orders. For a refund, call the order desk.
• The money-back guarantee is a purchase policy, not a medical promise.

None of those is specific to this product and all of them are true of it. The two sections above are the ones that are specific, which is why they come first.

Zinc is the one row on this bottle where a reader might reasonably worry about the opposite problem, so it is worth answering directly.

Maret and Sandstead on zinc requirements sets out why zinc intake has an upper bound as well as a lower one: sustained high supplemental intakes interfere with copper absorption. That is a real effect and it is documented.

At 5.5 mg, or half a day's reference intake from one capsule, this product is nowhere near that territory. Capdor's zinc meta-analysis pooled fourteen reports and 3,978 people; fasting glucose fell 0.19 mmol/L overall using supplemental amounts well above this one, and a 2024 GRADE-assessed review covered twenty-three trials; the authors rate the certainty of most outcomes low or very low. This is a nutritional top-up and it should be read as one.

The same logic runs the other way for chromium. At 50 mcg the question is not whether the amount is safe, which it plainly is, but whether it is enough to do anything. That question belongs to the ingredients page and is answered there.