RetaFit Review (2026): Ingredients, Evidence & Verdict

One capsule contains: Niacin (Vitamin B3) 16mg, 100% of the reference intake, a standard, well-supported dose. Raspberry fruit extract (Rubus idaeus, 10:1) 150mg, the largest single active in the formula, though raspberry extract's own human evidence for weight loss is thin regardless of dose. Green tea leaf extract (Camellia sinensis, 4:1) at just 10mg, guarana seed extract (Paullinia cupana, 4:1) at 10mg, N-acetyl-L-carnitine at 2mg, and caffeine at 1mg.

The gap is the amounts, not the disclosure. Clinical research on green tea catechins for fat metabolism typically uses several hundred milligrams a day, not 10mg. N-acetyl-L-carnitine studies typically use 500-2,500mg, not 2mg. At 1mg, the caffeine content is negligible, nowhere near enough for a stimulant or energy effect on its own. Publishing exact numbers is genuinely more transparent than most competitors on this site, but the numbers themselves suggest several ingredients are present mainly for the label rather than at an effective dose.

RetaFit states a 30-day money-back guarantee, but the fine print on its own returns page adds real friction: the item must be unopened, unused and undamaged, you must contact customer service and get approval before sending anything back, return shipping is your responsibility and isn't refunded, and a refund takes up to 15 days after the item is received. That's a meaningfully different commitment than "try it and send it back if it doesn't work," worth knowing before you order the largest bundle. On the positive side, the returns page discloses a real fulfillment address (RetaFit c/o ShipBob / De Wild Group, Waddinxveen, Netherlands), something many pages in this category don't provide at all.

The sales page also leans on unverifiable trust signals, "50,000+ reviews," a rotating "X out of 10 people choose this" counter, and "as seen in" logos for major German outlets with no link to an actual feature. Treat those as marketing, not evidence, separately from the label data above, which is real and checkable.

A full nutrition-facts panel per capsule: Niacin (Vitamin B3) 16mg (100% NRV), raspberry fruit extract 150mg, green tea leaf extract 10mg, guarana seed extract 10mg, N-acetyl-L-carnitine 2mg, and caffeine 1mg.

Niacin is dosed at a standard, well-supported level. Several other actives (green tea extract, N-acetyl-L-carnitine, caffeine) are dosed well below the amounts typically used in the research behind them, likely too low to reproduce those studies' effects.

Yes, 30 days, but it requires prior approval from customer service, an unopened and unused item, and you pay non-refundable return shipping. Refunds take up to 15 days after the item is received.

The returns page lists a fulfillment address in Waddinxveen, Netherlands, operated in partnership with ShipBob / De Wild Group.

One capsule per day, taken with food.

Through the official page. That's exactly where our link takes you, so you see today's real price and package options firsthand.

It depends on your priorities. We scored RetaFit 2.4/5. On the positive side, publishes a genuine, complete nutrition-facts panel with real milligram doses, more transparent than most competitors in this category. However, green tea extract, N-acetyl-L-carnitine and caffeine are all dosed well below typical research amounts. Compare the evidence, total cost and alternatives before purchasing.