
Vitamin D3 + K2 liquid drops
Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

£25.00
KIKI Health Resveratrol is a trans-resveratrol supplement derived from Japanese Knotweed, one of the most concentrated natural sources of this polyphenol.
Secure checkoutFree standard delivery on all orders30-day returns
Kiki HealthResveratrol
Vitamin D3 + K2 Liquid Drops deliver two fat-soluble nutrients that are commonly considered together: D3 as cholecalciferol — the form most readily converted a…

60 billion AFU of Akkermansia muciniphila plus 64 billion CFU of Lactobacillus acidophilus, 700 mg berberine, 200 mg inulin, 2.4 mg astaxanthin, and chromium i…
Interested in more
personalised recommendations?
Set up your
Profile to connect your wearables, biomarkers and test results. Create a bespoke plan based on your unique biology. Expert-led, evidence-based.
KIKI Health Resveratrol is a trans-resveratrol supplement derived from Japanese Knotweed, one of the most concentrated natural sources of this polyphenol. Trans-resveratrol is the biologically active form of resveratrol — the isomer studied for its role in activating sirtuins, a family of proteins associated with cellular stress response, DNA repair signalling, and longevity pathways. It is also studied for cardiovascular support, particularly its potential to help maintain healthy endothelial function and reduce oxidative stress in blood vessels.
This supplement suits those with a specific interest in longevity and NAD+ pathway support, particularly people who have already covered foundational nutrition — good diet, adequate sleep, key micronutrients — and are looking to build further. It is also relevant for those with a family history of cardiovascular concerns who want to support their heart health proactively, under guidance from their clinician.
The single-ingredient, focused formulation means you know exactly what you are taking and can stack it clearly with other protocols. Japanese Knotweed is a well-established botanical source for trans-resveratrol, favoured over grape-skin extracts for its higher and more consistent polyphenol concentration. As with most polyphenol supplements, the evidence base is still developing, but the mechanistic rationale is credible and the safety profile in healthy adults is generally well regarded.
Trans-Resveratrol from Japanese Knotweed

Take 1 capsule daily, as stated on the packaging. Resveratrol is fat-soluble, so taking it alongside a meal containing some dietary fat may support absorption. Consistency over weeks to months is generally how this class of polyphenol is used.
Resveratrol exists in two isomeric forms: trans and cis. Trans-resveratrol is the biologically active form — the one studied for sirtuin activation, antioxidant activity, and cardiovascular effects. Many cheaper supplements use a mix of both; a trans-resveratrol-specific product like this one gives you the form with the stronger evidence base.
It is most relevant for adults with a specific interest in longevity, cellular health, or cardiovascular support — particularly those who have already addressed foundational nutrition and are looking to extend their protocol. It is not a substitute for a balanced diet or clinically indicated treatments.
Resveratrol may interact with blood-thinning medications such as warfarin or aspirin, as it has mild antiplatelet properties at higher intakes. If you are on any prescription medication, speak to your GP or pharmacist before adding this to your routine.
Polyphenol supplements like resveratrol are not typically associated with short-term noticeable effects. Their proposed benefits — cellular resilience, cardiovascular support — operate over longer time horizons. Most people use them consistently over months as part of a broader preventive health approach.
There is insufficient safety data on resveratrol supplementation during pregnancy or breastfeeding. We recommend avoiding it during these periods and discussing any supplementation with your midwife or GP.
We offer physician-led talks and events to help you learn more about how to deal with stress through movement, mindfulness, and refocusing.
Learn about our next event
Overall Sentiment
5 months ago
Been taking this alongside NMN for about six weeks now. Hard to attribute specific changes to any single supplement, but my energy levels feel more consistent and I'm sleeping better. Capsule is easy to swallow, no aftertaste. Will continue.
5 months ago
Really pleased with the quality and the fact it's a clean formulation — no fillers I couldn't recognise. Only minor issue is the bottle is quite small in hand; feels like you'd expect more capsules for the price. Still, I'll reorder.
5 months ago
I wanted a single-ingredient resveratrol rather than something bundled into a multivitamin where you don't know the actual dose. This does the job. Bought it after reading about sirtuin pathways — I know the evidence is still building but the rationale made sense to me and my GP was happy with it.
5 months ago
My cardiologist mentioned resveratrol as something worth exploring given my family history. Glad I found a reputable source. Delivery was quick and the packaging is no-nonsense.
5 months ago
I've been cycling this — on for eight weeks, off for two. Subtle but I do feel like my recovery after longer runs is slightly quicker. Can't prove it's the resveratrol but nothing else has changed in my routine. Good price point for the quality.
6 months ago
I've been taking this for about ten weeks and honestly haven't noticed a dramatic difference in anything specific. I know polyphenol effects are subtle and long-term, so I'm sticking with it, but I did want to flag it's not one of those supplements where you feel something quickly. Quality seems good though and the price is fair.
A blood test is the only way to know what your body actually needs. We’ll tell you which of these supplements is right for you.
Find your panel
A curated selection of products, tools and rituals, chosen by our doctors.
Loading the catalogue…