Neutonic Productivity Drink

What it does

Neutonic Productivity Drink is a carbonated, ready-to-drink can from Neutonic, a UK brand whose range also includes caffeine-free Brain Capsules. One can is one serving ('Each can contains one serving'), and the vendor's recommended serving is one can a day. With Japan selected, neutonic.com sells it in packs of 12 cans in one flavour (White Peach, Tropical Ice, Strawberry Lemonade, Wild Citrus, Blue Raspberry or Orange Sunrise) or as a mixed-flavour pack. Besides the actives, the ingredient list names carbonated water, the acidity regulators citric acid and trisodium citrate, natural flavourings, the sweeteners sucralose and acesulfame K, and potassium sorbate as a preservative; the vitamin blend lists niacin, pantothenic acid, vitamin B6, riboflavin, thiamine, folic acid (as L-methylfolate), biotin and vitamin B12 (as methylcobalamin), which the vendor's panel gives as 100% of the reference intake (RI). The vendor says the drink is suitable for vegetarians and vegans.

How it works

Caffeine (120mg) blocks adenosine receptors; at low-to-moderate doses it consistently improves alertness, vigilance, attention and reaction time, with less consistent effects on memory (McLellan 2016, a narrative review). L-theanine (400mg, twice the top of our 100-200mg reference range) is an amino acid from green tea: in an 11-study meta-analysis, caffeine plus L-theanine had moderate effects versus placebo on alertness and attention-switching accuracy (Camfield 2014), but Foxe 2012 found no added benefit over either compound alone, and in a controlled trial (Rogers 2008, PubMed 17891480) L-theanine did not significantly reduce caffeine jitteriness. Citicoline (500mg, as Cognizin®) is a precursor to acetylcholine and phosphatidylcholine; its memory evidence comes from older adults with inefficient memory at 1,000-2,000mg a day (Spiers 1996), and a Cochrane review found no evidence of an attention benefit in older adults with chronic cerebral disorders. Rhodiola is an adaptogen: small trials of the SHR-5 extract found less mental fatigue, but a 2012 systematic review rated every included study at high or unclear risk of bias, and the product page does not say which extract or standardisation is used. We have no reference dose on file for Panax ginseng. Neutonic Productivity Drink itself has not been tested in a published trial; the vendor's claims rest on ingredient-level research.

What to expect

Caffeine's alerting effect typically starts within 15-45 minutes, the onset on our caffeine page; the vendor suggests a can before 'any high demand session', from a morning start to training. Each can has 120mg caffeine and the vendor recommends one can a day, advising drinkers to be mindful of their total caffeine intake, so count it toward your daily total if you also drink coffee. Citicoline's memory effects in trials were measured after 2-3 months, so a single can should not be expected to change memory. With Japan selected, neutonic.com offers 12-can packs one-time or on a subscription (Subscribe & Save 15%), priced in pounds sterling (checked 2026-10-19). The product page says 'Worldwide shipping available'; we found no Japan-specific shipping terms on neutonic.com, and its shipping help article says 'If you're ordering from outside one of our local fulfilment regions, your order may be subject to import duties, taxes, VAT or customs processing fees.' (checked 2026-10-19).

Hero ingredients

• Citicoline500mg
• L-Theanine400mg
• Caffeine120mg
• Rhodiola Rosea400mg
• Panax Ginseng200mg

Number and quality of evidence-graded ingredients. Trademarked extracts and standardized actives raise this score.

The share of ingredients with a reference dose on our ingredient pages whose label-stated daily amount meets that page's minimum. Amounts the label hides (blend shares) or states on a different basis count as not met; ingredients with no reference page are listed but not scored.

Full disclosure of every ingredient at its exact dose. Proprietary blends are scored as opaque.

Cost per month relative to per-serving clinical doses delivered. Cheaper products with underdoses score lower.

Brand reputation, third-party testing, refund track record, and Trustpilot signal across multiple years.