UK supplement search trends 2026: what Britain actually searches for

Of the 8,048 UK supplement search terms we track, 6,314 show a clear seasonal shape — and 40.8% of those peak in the same month. January takes 2,578 of them. The next biggest month, August, takes 912: roughly a third as many.

Eight of the ten categories on the calendar peak in January, and most bottom out in midsummer or December. For a supplement brand that makes January a stock and content problem to solve in October, not a month to react to. You can see the whole shape in the calendar above.

Summed across 1,646 deduplicated terms, creatine carries a demand index of 858,416 — the largest of the ten categories, ahead of magnesium at 692,497 and iron at 488,876. The head term “creatine” is the single biggest term in the whole corpus at 208,250, and “creatine gummies” alone carries 23,967.

The questions running underneath it are their own story. The most repeated question Google attaches to any UK supplement search is “Why do doctors say no to creatine?” — served on 286 of the 742 results pages we sample. “Why did I gain 10 pounds after taking creatine?” follows on 202. A category this big, asking questions this anxious, still peaks like everything else: January, with a 1.95× swing to its December trough.

Vitgem does not sell creatine, and it leads this report anyway: the corpus behind the study covers the UK supplement market, not our shelf.

“magnesium glycinate” carries a UK search demand index of 186,750. “magnesium” itself carries 110,000. The specific form outsearches the mineral’s own name 1.7 : 1 — the clearest sign in the corpus that UK supplement buyers increasingly arrive knowing the exact compound they want, not just the ingredient on the front of the label.

The category as a whole sums to 692,497 across 496 deduplicated terms — second only to creatine — and it peaks in January with the rest of the resolution calendar. We looked at the sleep side of that demand in magnesium for sleep.

“vitamin d deficiency” carries a UK search demand index of 44,683, and it peaks in March. Its quietest month is August. NHS advice is to consider a daily vitamin D supplement from October to early March — so the searching peaks in the month the advice window closes.

Vitamin D is also among the most seasonal categories we track: it swings 2.13× between its busiest and quietest month, against 1.7× for sleep and 1.32× for iron. Our own vitamin D3 and K2 gummies sell on exactly that curve.

January is the resolution calendar, but it is not the only one. Iron — 488,876 of summed demand across 795 terms, the third-largest category — peaks in March, the same month “vitamin d deficiency” peaks, and multivitamins peak in March too. That is the depletion calendar: late winter, when the searching is driven by how people feel rather than by what they resolved.

The third calendar arrives with summer. “tablets for weight loss” (46,292) peaks in July and the weight-loss family with it; keto peaks in August; menopause peaks in August, for reasons the next finding unpacks. We sell nothing in the weight-loss aisle and report that curve as we find it — a search curve is a fact about attention, not an endorsement of what the searches lead to.

Menopause peaks in August and bottoms out in July, swinging 1.61×.

The nuance matters, because the headline hides it. The family's single biggest term, “perimenopause symptoms” (58,667), does peak in January. The August peak comes from the tail: “perimenopause age” (8,533, peaking August) and “perimenopause test” (8,433, peaking September, the sharpest swing in the family). That is the shape of people investigating a suspicion, not people shopping a New Year resolution.

We wrote about that stage separately in perimenopause and natural menopause support in the UK, and the formula it describes is our menopause gummies.

“Melatonin” carries a UK search demand index of 155,500. The gummy-format variants — “melatonin gummies” and its spellings and word orders, which the tool returns as one term set — carry 43,050. Both peak in January.

Melatonin is a prescription-only medicine in the United Kingdom. It is not permitted in a food supplement here, so none of that demand can be met over the counter, and searchers land instead on a pharmacy consultation, an overseas seller, or a melatonin-free product that resembles what they searched for. Sleep is also heavily January-loaded: 58.8% of its seasonal terms (316 of 537) peak in January.

We sell a night time sleep gummy, and it contains no melatonin, because it legally cannot.

1,772 of the 8,048 terms we track (22.0%) are phrased as questions: what does it do, is it safe to take, how long does it take to work. 278 distinct terms are explicitly about safety — side effects, interactions, taking too much.

Google's own results pages agree. Across the 742 SERPs we sample, the People Also Ask box serves 10,023 question slots drawn from 4,711 distinct questions, and 5.6% of those slots are explicitly about safety — the most repeated being “What is the biggest side effect of creatine?”, shown on 33 pages.

The largest safety terms people type themselves are “creatine side effects” (19,300), “iron supplements side effects” (13,000) and “ashwagandha side effects” (9,933). For ashwagandha the ratio of interest to doubt is 4.6 : 1 — “ashwagandha benefits” at 46,183 against “ashwagandha side effects” at 9,933. Roughly one person in six looking it up is looking for the downside.

It is the argument for printing every dose on the label. Ours are on the ashwagandha gummies page and on every other product page.

Of the 742 supplement topics we track, 630 — 84.9% — trigger a Google AI Overview on the UK results page: a machine-written answer assembled above every organic result. A People Also Ask box appears on 99.7% of them. The classic featured snippet, once the prize for exactly these questions, survives on 12 pages (1.6%).

Shopping surfaces are rarer than the discourse suggests — Popular Products panels appear on 14.6% of these SERPs — while discussion-and-forum modules appear on 20.5%. The practical consequence for anyone publishing in this category: the first thing a UK searcher reads is usually a synthesis of pages that answer the question directly. That is the standard this page, and everything we publish around it, is written to.

Count every organic top-ten across the 742 topic SERPs and the most present site is Holland & Barrett, on 252 of them (34.0%). Amazon follows on 244, Boots on 183. The NHS website appears on 48 — 6.5%, behind eBay on 56.

Read plainly: when Britain asks a supplement question, the first page of answers is mostly shops, and the national health service is on it for roughly one topic in fifteen. We are a retailer too, so this is not a complaint from the sidelines — it is the reason this report and the method behind it are public. If the first page is mostly shops, the least a shop can do is publish its data and show its working.