What the report found
ADHD supplement ads are the focus of a recent report from the Advertising Standards Authority (ASA) and the Committee of Advertising Practice (CAP), published on 15 October. It only covers paid ads on Meta and Google between February and July 2026, so it doesn't tell us about every ad out there. In that time, the ASA's AI-based monitoring system picked up 72,400 supplement ads that seemed relevant to ADHD and autism, and flagged 1,595 for a closer look.
After review, 1,383 ads from 17 advertisers broke the rules. The main problems were claims that a supplement could treat, prevent or cure ADHD or autism traits, along with health claims the advertising code doesn't allow.
Why these ads land
If you've bought a supplement after seeing one of these ads, you haven't done anything daft. The report says more people are exploring diagnosis and looking for support, which has put extra pressure on NHS services, and it describes these ads as "exploiting the demand". When you're tired, stuck waiting and just want something to help, a confident promise is hard to scroll past. Wanting help isn't gullible.
Red flags to spot
The report gives examples of the kinds of claims that broke the rules, and they're worth knowing:
- Promises to fix or cure ADHD, such as "fixes ADHD in 30 days"
- Promises to end traits, such as "no more meltdowns"
- Big promises aimed at parents, such as "autism parents – this is a game changer for speech"
- Brain-boost claims that a supplement can enhance mental clarity, energy, focus, cognitive performance, memory and mood
- Claims to eliminate brain fog
What happened next
The ASA contacted all 17 advertisers. Three had already stopped running ads and were sent guidance on what they can and can't claim. The other 14 were told to remove or change their ads: 11 agreed, two took their ads down without replying, and one didn't respond and was referred to Meta, which removed the ads. By July, ads from those 14 advertisers had dropped to less than a quarter of their earlier level.
The rules still weren't being followed well, though. Only 4.7% of the relevant ads complied in February. That rose to 31.2% in June, then fell to 8.6% in July. Nearly half of the advertisers contacted were based outside the UK, which the report says may have slowed things down.
Not something to cure
The report puts it plainly: "ADHD and autism and their associated characteristics are not illnesses or diseases, nor are they conditions that can be cured." Dr Miguel Toribio-Mateas, a nutrition researcher at the University of West London, told NutraIngredients that ads promising to reduce or eliminate ADHD or autistic traits "can reinforce the idea that neurodivergent people need to be fixed". He also said there is "legitimate scientific interest" in nutrition and the brain, but early findings aren't enough to claim a supplement improves ADHD traits.
If you're weighing up a supplement, especially alongside ADHD medication, your GP, pharmacist or prescriber is the right person to ask.
Reporting an ad
If you see a paid ad promising to fix, treat or cure ADHD, you can complain to the ASA using its online form. It helps to note where and when you saw the ad and to have a screenshot or screen recording ready. The ASA doesn't accept anonymous complaints, so you'll need to give your name and contact details. It says it will keep monitoring, "escalate swiftly" when advertisers don't follow the rules, and work with the platforms.
Rewritten for ADHDer from reporting by Advertising Standards Authority (ASA) / Committee of Advertising Practice (CAP). Originally published 15 Oct 2026.
Read the original at Advertising Standards Authority (ASA) / Committee of Advertising Practice (CAP) ↗