Compare greens powders, superfood supplements and herbal products on the amount of each ingredient per daily serving, the form of any extract, and the cost per day. These products add to a varied diet rather than replacing fruit and vegetables, and herbal ingredients have no authorised health claims in Great Britain, so we explain what's known and what isn't.
Herbal supplements · Turmeric & curcumin · Ashwagandha · Adaptogens · Vitamins & supplements · Women's health
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What are greens supplements?
Greens supplements are powders, tablets or capsules made from dried green foods such as spirulina (a blue-green alga), grasses and leafy vegetables, often with added vitamins and minerals. In this collection that includes spirulina, a greens multi, a greens multivitamin powder and sea moss with vitamin B12.
They don't replace fruit and vegetables. The NHS 5 A Day guidance counts 80g of fresh, canned or frozen fruit and vegetables as one portion, and doesn't list supplements or powders as counting towards it.
Do you need a superfood supplement?
Most people don't. The NHS says most people should get all the nutrients they need by having a varied and balanced diet, although some people may need extra supplements, such as vitamin D in autumn and winter.
"Superfood" is a marketing word, not a legal or scientific category. Read our guide to what supplements you actually need before you choose, and see the NHS-recommended basics in vitamins and supplements.
What herbal supplements do we stock?
This collection includes turmeric and curcumin, ashwagandha, boswellia, maca, fenugreek, shatavari, dong quai, black cohosh, chasteberry and horsetail, along with herbal blends sold for women's health and menopause. Each sub-collection below groups the main types.
| Collection | What's in it | What to compare |
|---|---|---|
| Turmeric & curcumin | Turmeric root, curcumin extracts and phytosome forms (curcumin combined with a type of fat called phospholipids) | Curcumin per daily dose and the form |
| Ashwagandha | Root extract gummies and capsules | Extract per daily dose and its standardisation |
| Adaptogens | Ashwagandha and herbal blends | Each ingredient's amount, not just the blend total |
| Herbal supplements | The full range of single herbs and blends | Extract strength, daily dose and cost per day |
Do herbal supplements have any proven benefits?
No herbal ingredient has an authorised health claim in Great Britain, so no product here can legally say what it does for your body. Health claims for botanical (plant) substances were put on hold by the European Commission before the UK left the EU, and the UK says only authorised claims in the GB register may be used.
Studies exist for some herbs, but many are small or short. "Where evidence is limited or inconclusive, we should say so openly," says Andy Arshad, who runs SupplementHQ. For menopause products, the NHS says there is very little evidence to show how well herbal remedies such as black cohosh and red clover work, or how safe they are.
Are herbal supplements safe?
Not for everyone. The NHS says you should not take herbal medicines if you are pregnant or breastfeeding, have kidney or liver problems, or take certain medicines, and that some medicines, including statins, antidepressants, diabetes medicines, blood pressure medicines, warfarin and the combined pill, don't mix well with herbal products.
Some herbs are under active UK safety review. The Committee on Toxicity (COT), which advises the Food Standards Agency, was still discussing a draft statement on ashwagandha in September 2026, and has raised reports of liver harm linked to turmeric and curcumin supplements. Speak to your GP or pharmacist before taking any herbal supplement if you take medication or have a medical condition.
Is sea moss good for you?
Sea moss is a seaweed, and seaweeds can contain iodine, but there are no authorised claims for sea moss itself. The sea moss product we stock also contains vitamin B12, so check the label for how much of each you get per serving.
The NHS says adults need 140 micrograms of iodine a day, and that taking high doses for long periods could change the way your thyroid works. If you have a thyroid condition, check with your GP or pharmacist first.
How do you compare greens and herbal supplements?
Compare the amount of each ingredient per daily serving, whether an extract is standardised (tested to contain a set amount of a named compound), and the cost per day. Blends often list many ingredients in small amounts.
"Adding more ingredients doesn't automatically make a product more effective. Each ingredient needs a clear purpose, an appropriate dose and evidence supporting its intended use," says Andy.
How to compare value (example figures, not real products): a £24 greens powder with 30 servings costs 80p a day. A £15 tub of 60 capsules, two a day, costs 50p a day. Then check what each daily serving contains: a cheaper product with smaller amounts may not be better value. Our guide to reading a supplement label explains what to look for.
We sell the products on this page. That's our commercial interest, and it's why we show the evidence alongside them. This page is general information for adults, not personalised medical advice. Food supplements should not replace a varied, balanced diet.
Written by Andy Arshad, SupplementHQ. Last reviewed 11 October 2026.