Good Idea

Sparkling Water With Amino Acids and Chromium

Good Idea is a sugar-free sparkling water developed in Sweden and operated by Good Idea Inc., with the company listing locations in Lund, Sweden and Larkspur, California. It is sold in 12 oz cans in five flavours — Swedish Lemon, Sea Berry, Black Currant, Wild Raspberry and Strawberry Elderflower — at $42 for a twelve-pack, with a try-them-all bundle on the site and eighteen and thirty-can variety packs listed on Amazon. Per can the drink carries zero calories, zero carbohydrate, zero sugar and zero protein, with 50 mg of potassium, 0.5 mg of zinc and 29 mcg of chromium. The ingredient list is carbonated water, an amino acid blend of L-leucine, L-threonine, L-lysine, L-isoleucine and L-valine, natural flavour, potassium citrate, citric acid, zinc citrate and chromium picolinate, with sea buckthorn berry powder added to Sea Berry.

The central claim is that the drink reduces post-meal blood sugar by an average of 25%. The supporting study is Ostman and colleagues, published in PLoS ONE in 2020: a randomised, double-blind, placebo-controlled crossover trial in 60 overweight healthy non-diabetic adults on an intention-to-treat basis, 48 per protocol, run at sites in London, Ontario and Orlando, Florida. Glucose incremental area under the curve over two hours fell from 68.7 to 52.2, a difference of 16.5 with a 95% confidence interval of 3.1 to 30.0 and a p-value of 0.017, and venous peak glucose fell by 0.35 mmol/L. Two results are worth reading alongside it: there was no significant difference in insulin, and no significant difference in capillary glucose measured on a standard bedside glucometer, which is the device a consumer would use at home.

Two caveats belong next to that result. First, disclosure: the paper states that the funder provided support in the form of salaries for four of the authors and consulting fees, and that three authors are inventors on a patent family describing the supplement studied, two of whom jointly own the rights. Good Idea's own science page names Dr Elin Ostman as the inventor of the product, and she is the paper's lead author. Company-funded nutrition research is common, but the conflict is real and disclosed in the paper itself. Second, scope: the trial measured a single meal in people without diabetes over two hours. No long-term outcome such as HbA1c, weight or diabetes incidence is cited anywhere, even though on-site testimonials reference improved A1c and type 2 diabetes. A second study of 19 subjects in Lund is described as single-blind and randomised with a reported 30% reduction in incremental glucose peak, but no journal, year or DOI is published, so it cannot be checked. One further gap: the amino acid blend is not quantified on the label or the site, while the published trial used 2.6 g, so a buyer cannot confirm the can matches the dose tested. The chromium does line up, with 29 mcg of elemental chromium consistent with the roughly 250 mcg of chromium picolinate used in the study.

Shipping is free over $50, with a separate offer of free shipping on two or more cases; transit times are not published. The refund policy states that because the product is consumable, returns are not accepted; damaged shipments are replaced free once a photograph is verified by email. There is no satisfaction guarantee, and the footer's own shipping and returns and FAQ links currently return 404 errors, with the refund terms reachable only at the policies page directly. Subscriptions deliver automatically on a chosen schedule and the site states they can be modified or cancelled at any time, though the specific cancellation mechanics are not documented. On independent signal there is very little to go on: there is no Trustpilot profile and no Better Business Bureau profile, so the only customer feedback is first-party verified-buyer quotes on the site with no published aggregate. The credibility that does exist is retail and clinical rather than review-based — stocked on Amazon and at H-E-B, with a trade presence at the diabetes educators' conference, and the standard dietary supplement disclaimer in the footer.