MEN: Multivitamin vs Greens Powder: What Are You Actually Paying For?

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Quick Answer

A multivitamin buys you set doses of vitamins and minerals for about 40p to 50p a day. A greens powder buys you plant powders and, in some brands, added vitamins, for 49p to £2.63 a day. Which one is worth it depends on what the label lists per serving, not on how many ingredients the tub names.[10][14][15]

Neither one is a plate of vegetables. The NHS says most people should get all the nutrients they need from a varied and balanced diet, and a serving of the powders we checked weighs 5g to 12g against an 80g portion of vegetables.[2][6]

Key points:

Of four UK greens powders, one lists no vitamins or minerals at all, and the AG1 UK label lists no vitamin D, iodine or magnesium.[10][14]
The NHS asks everyone to consider 10 micrograms of vitamin D a day from October to early March, so check whether your product lists any.[3]
Taking both can stack up: the NHS says do not take more than 25mg of zinc supplements a day unless a doctor advises it.[4]
Prices on 4 November 2026 ran from 49p to £2.63 per daily serving for the greens powders and 40p to 50p for MenTools One-A-Day.

Jump to: Five options, label by label | What you are actually paying for | What each can legally claim

Supplements are foods, not medicines. They are designed to support normal health and nutrient status alongside a balanced lifestyle, not to diagnose, treat, prevent, or cure any medical condition.

Disclosure: MenTools publishes this article and sells MenTools One-A-Day Multivitamin.

How we evaluate: We assess mineral form quality, dose versus NRV, authorised health claims, and male-specific design. Full sources are listed in the references below.

Five Options, Label by Label

We read the UK product page and nutrition panel of four widely sold greens powders and our own multivitamin on 4 November 2026, then added the two routes most men forget: taking both, and taking neither. Every option has a real watch-out, including ours.[10][11][13][14][15]

Option	Cost per day	What the label lists per serving	Suits a man who	Watch-out
MenTools One-A-Day, 1 capsule	50p one-off, 40p on the 3-monthly subscription	Vitamin D3 25µg (500% NRV), zinc 10mg, selenium 55µg, iodine 150µg, B12 25µg; no iron	Wants set vitamin and mineral doses in one capsule	Contains no greens, fibre or plant powders, and its magnesium is under a third of the NRV, so it is not a full magnesium dose
AG1, 12g scoop	£2.63 on the monthly subscription (£79 per 30 days)	Zinc 14mg, selenium 22µg, B12 200µg (8000% NRV), vitamin C 420mg; no vitamin D, iodine or magnesium listed	Wants vitamins, plant extracts and bacterial cultures in one drink and has the budget	About five times the daily cost of a basic multivitamin, and the UK label lists no vitamin D for the winter months
Huel Daily Greens, 8.5g	£1.67 one-off, £1.50 on subscription	Vitamin D 46µg, vitamin K 138µg, zinc 15mg, magnesium 57.5mg, iron 4.5mg, iodine 35µg	Wants a full vitamin and mineral panel inside a greens drink	Contains iron, and lists zinc oxide and magnesium oxide in its ingredients
Myprotein Green Superfoods, 5g	58p at the sale price of £28.99 for 50 servings (was £47.99)	Vitamin D 5µg, iodine 150µg, vitamin C 12mg; no zinc, magnesium or B12 listed	Wants a low-cost greens powder with some vitamin D and iodine	Out of stock in every flavour when we checked, and the page gives a 5g serving in its table but a 7g scoop in its FAQ
Bulk Complete Greens, 9g	49p for 500g at the sale price of £26.99 (63p at £34.99)	No vitamins or minerals listed; 3.7g protein and 2.3g fibre	Wants plant powders and a little fibre, not a vitamin dose	You are paying for plant powders, with no amount given for each plant
A greens powder plus a multivitamin	The two prices added together	Both labels combined	Wants plant powders and set vitamin doses	Overlaps stack: Huel plus One-A-Day reaches 25mg of zinc, the NHS upper figure for supplements
Neither: food first, plus winter vitamin D	The cost of your vegetables and a vitamin D supplement	Whatever your plate holds; 80g per portion of vegetables	Already eats a varied diet with 5 portions of fruit and vegetables a day	The NHS still asks everyone to consider 10µg of vitamin D a day from October to early March

Read the third column before the price. Two of the four greens powders list no vitamin D at all, and one lists no vitamins or minerals, so the tub that costs the most per day is not the one with the most vitamin D in it.[10][12][14] Prices were the brands’ own UK prices on 4 November 2026 and were the same when we checked again on 9 November 2026, and two of them were sale prices that will change.

Vitamin D per daily serving, as each UK label lists it.

What You Are Actually Paying For

What is actually in a greens powder?

Mostly dried plants. Bulk Complete Greens lists spirulina, chlorella, broccoli, pumpkin seed protein, spinach, alfalfa, moringa and kale, with no amount for each, and a 9g serving gives 3.7g of protein and 2.3g of fibre.[14] Huel names five blends, from greens to supermushrooms, and AG1 adds bacterial cultures and plant extracts to its vitamins.[10][11]

Some powders then add vitamins and minerals on top, and that is where they differ most. Myprotein adds three, Huel lists more than twenty rows on its panel, and Bulk adds none.[12][13][14]

What does a multivitamin give you that a greens powder may not?

A fixed dose of each vitamin and mineral, printed against its NRV, the reference amount set in UK food law.[8] MenTools One-A-Day lists 25 micrograms of vitamin D3, which is 500% of the 5 microgram NRV, plus 10mg of zinc, 55 micrograms of selenium and 150 micrograms of iodine, each at 100% of the NRV.[15]

What it does not give you is anything a plant brings: no fibre, no protein, no greens. If you are short on vegetables, a capsule does not change that.

Is a greens powder a substitute for vegetables?

No. The NHS counts a portion of fruit or vegetables as 80g, and 5 A Day is based on a World Health Organization minimum of 400g a day.[6] The servings we checked weigh 5g to 12g, a small fraction of one portion.

Most men have room on the plate. In the 12 months to November 2022, 32.5% of adults in England ate 5 portions of fruit and vegetables a day, and the government notes that this survey overestimates the figure compared with the National Diet and Nutrition Survey.[7]

Start with your plate, then pick the product that fills the gap you actually have.

Does the mineral form matter?

It can. In a randomised crossover trial, 15 healthy adults took 10mg of zinc without food, and the median share absorbed was 61.3% from zinc citrate, 60.9% from zinc gluconate and 49.9% from zinc oxide.[9] Huel Daily Greens lists zinc oxide and magnesium oxide in its ingredients.[12]

MenTools One-A-Day uses zinc bisglycinate and magnesium bisglycinate, which that trial did not test, so it gives no figure for our forms.[15] The fair reading is that the form is worth checking on any label, ours included.

What happens if you take both?

The doses add up. The NHS says do not take more than 25mg of zinc supplements a day unless a doctor advises it, and no more than 100 micrograms of vitamin D a day.[3][4] Huel Daily Greens with One-A-Day comes to 25mg of zinc and 71 micrograms of vitamin D; AG1 with One-A-Day comes to 24mg of zinc.[10][12][15]

Iron is the other one to read for. Huel lists 4.5mg of iron per serving, while the NHS says men aged 19 and over need 8.7mg a day and should be able to get it from a varied diet.[5][12] One-A-Day is an iron-free formulation.[15]

What does each one cost over a year?

At the prices we found, AG1 on its monthly subscription works out at about £960 a year, Huel Daily Greens at about £550 on subscription, and MenTools One-A-Day at about £180 bought one month at a time.[10][11][15] Bulk and Myprotein sat close to the multivitamin per day, but both prices were sale prices.[13][14]

Cost per daily serving at each brand’s UK price on 4 November 2026.

What Each Can Legally Claim

In Great Britain, health claims on food must come from the GB Nutrition and Health Claims Register, which holds the authorised wording and the conditions of use for each claim.[1] UK food law also sets 15% of the NRV as the usual benchmark for a significant amount of a vitamin or mineral, so read a claim next to the dose on the panel.[8]

MenTools One-A-Day carries 11 authorised health claims in total, each of which appears in the register in the exact wording below.[1] This is the full list of what the product is allowed to say it does:

Pantothenic acid contributes to normal mental performance.
Zinc and iodine contribute to normal cognitive function.
Zinc contributes to the maintenance of normal testosterone levels.
Vitamins B2, B3, B6, B12, vitamin C and magnesium contribute to the reduction of tiredness and fatigue.
Magnesium contributes to normal psychological function.
Vitamin D and vitamin K contribute to the maintenance of normal bones.
Vitamin D contributes to normal muscle function.
Vitamin D, vitamin C, selenium and zinc contribute to the normal function of the immune system.
Selenium contributes to normal spermatogenesis.
Vitamin C, vitamin E and selenium contribute to the protection of cells from oxidative stress.
Biotin contributes to the maintenance of normal hair and skin.

A plant powder with no vitamin or mineral on its panel has nothing on that list to point to, and a long ingredient list does not change that. When you compare products, compare the doses and the claims, not the number of superfoods on the front of the tub.

FAQ

Can a greens powder replace a multivitamin?

Not by default. It depends on what the label lists per serving. Of the four greens powders we checked, Bulk Complete Greens lists no vitamins or minerals at all and the AG1 UK label lists no vitamin D, iodine or magnesium, while Huel Daily Greens lists a full vitamin and mineral panel. Read the per-serving amounts, not the ingredient count.[10][12][14]

Can a greens powder replace vegetables?

No. A serving of the powders we checked weighs 5g to 12g, while one NHS portion of fruit or vegetables is 80g and the 5 A Day target is based on a WHO minimum of 400g a day. The NHS says most people should get the nutrients they need from a varied and balanced diet.[2][6]

Is it safe to take a greens powder and a multivitamin together?

Add up the labels first. The NHS says do not take more than 25mg of zinc supplements a day unless a doctor advises it, and no more than 100 micrograms of vitamin D a day. Huel Daily Greens with MenTools One-A-Day comes to 25mg of zinc, right on that limit, so check every product you take.[3][4]

Do I still need vitamin D if I take a greens powder?

Check the label. The NHS says everyone should consider 10 micrograms of vitamin D a day between October and early March. Huel Daily Greens lists 46 micrograms and Myprotein Green Superfoods lists 5 micrograms per serving, while the AG1 UK label and Bulk Complete Greens list none.[3][12][13]

What does the extra money in a greens powder pay for?

Mostly plant powders, extracts, flavour and, in some products, bacterial cultures, protein and fibre. The vitamin and mineral doses are on the nutrition panel, so compare those per serving against the price per day. A higher price does not mean a higher vitamin D or zinc dose.[10][14]

I am on TRT or prescription medication. Can I take a greens powder or a multivitamin?

If you are on TRT or any prescribed medication, speak with your prescribing doctor before adding any supplement. MenTools products are nutritional supplements designed to support general health and normal nutrient status, not medicines and not a replacement for medical treatment.

Are food supplements medicines?

No. Food supplements are foods in law, not medicines. They are designed to support normal health and nutrient status alongside a balanced lifestyle, not to diagnose, treat, prevent, or cure any medical condition.

Final Recommendation

Start with the plate. If you eat fewer than 5 portions of fruit and vegetables a day, more vegetables will do more than either tub, and the NHS says a varied diet should cover most nutrients for most people.[2][6] Then cover vitamin D from October to early March, which the NHS asks everyone to consider.[3]

If you want set vitamin and mineral doses, a multivitamin is the cheaper way to buy them. If you want plant powders and fibre in a drink, buy a greens powder for that and read its panel for vitamins rather than assuming they are there. If you take both, add up the zinc and vitamin D.[4]

MenTools One-A-Day is one option, and its limitation is plain: it is a capsule of vitamins and minerals, not a portion of greens. For how much zinc you need, read our guide to how much zinc a man needs, and for the winter numbers, our guide to vitamin D for men in the UK.

Options For Men to Take Action

Most men who buy a greens powder are trying to cover a diet they know is thin, and end up paying for a tub that may not list the vitamins they assumed were in it. Others stack a powder, a multivitamin and a separate vitamin D without ever adding up the zinc.

MenTools One-A-Day keeps it to one set dose: one capsule per day, high in vitamin D, with chelated minerals such as zinc and magnesium bisglycinate, active B-vitamin forms and no iron, in a vegan capsule. The nutrition archive covers the meals that do most of the work, and the MenTools challenges are built to make a daily habit stick, from eating more vegetables to getting outdoors in daylight.

How you can do this today: write down what you ate yesterday, count the portions of vegetables, then read the panel of anything you already take for vitamin D, zinc and iron before you buy anything new.

Wins on cost: at 50p a day bought one-off, or 40p on the 3-monthly subscription, One-A-Day costs less than a fifth of AG1’s monthly subscription per day.

Wins on time: no scoop, no shaker and no mixing; one capsule with breakfast and water.

Wins on practicality: a capsule travels in a wallet pill pouch or a desk drawer, so it goes with you on work days, training days and trips away.

Pay for the gap you actually have: vegetables on the plate, vitamin D in the winter, and a label you have read.

Last updated: 2026-11-06 v1.0

About the Author

Stuart Murray, Founder and Lead Researcher, MenTools Research Team

Stuart has spent over 10 years designing tools, products, and frameworks for men’s personal development, mental fitness, and long-term growth. At MenTools he focuses on turning complex science and behaviour change research into simple, testable routines men can actually run in real life.

Fact-Checking and Internal Review: All factual claims in MenTools articles are first drafted by the research team and then independently checked by Sebastian Hodgkinson, whose professional work and personal passion centre on men’s personal success and health. Together they verify every claim against peer-reviewed research and trusted health sources before publication.

Editorial Policy: MenTools articles follow a three-step process: research and drafting by the editorial team, internal fact-checking by a second reviewer, and final editorial review for clarity. Articles are updated when notable new evidence appears.

Medical Disclaimer: This guide is for informational purposes only and does not constitute medical advice. Always speak with your doctor or another qualified healthcare professional before starting any new supplement or programme if you have medical conditions or take prescription medication.

Supplement Notice: Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the stated recommended daily dose. Keep out of reach of children.

References

[1] Department of Health and Social Care. Great Britain nutrition and health claims (NHC) register. GOV.UK. https://www.gov.uk/government/publications/great-britain-nutrition-and-health-claims-nhc-register
[2] NHS. Vitamins and minerals. NHS. https://www.nhs.uk/conditions/vitamins-and-minerals/
[3] NHS. Vitamins and minerals, Vitamin D. NHS. https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
[4] NHS. Vitamins and minerals, Others, including zinc. NHS. https://www.nhs.uk/conditions/vitamins-and-minerals/others/
[5] NHS. Vitamins and minerals, Iron. NHS. https://www.nhs.uk/conditions/vitamins-and-minerals/iron/
[6] NHS. Why 5 A Day? NHS. https://www.nhs.uk/live-well/eat-well/5-a-day/why-5-a-day/
[7] GOV.UK Ethnicity facts and figures. Healthy eating of 5 a day among adults (Active Lives Survey, 12 months to November 2022). https://www.ethnicity-facts-figures.service.gov.uk/health/diet-and-exercise/healthy-eating-of-5-a-day-among-adults/5.0
[8] Regulation (EU) No 1169/2011 on the provision of food information to consumers, Annex XIII, nutrient reference values. legislation.gov.uk. https://www.legislation.gov.uk/eur/2011/1169/annex/XIII
[9] Wegmuller R, Tay F, Zeder C, Brnic M, Hurrell RF. Zinc absorption by young adults from supplemental zinc citrate is comparable with that from zinc gluconate and higher than from zinc oxide. J Nutr 2014;144(2):132-6. https://pubmed.ncbi.nlm.nih.gov/24259556/
[10] AG1. AG1 Pouch, UK product page, nutrition facts and prices, checked 4 and 9 November 2026. https://drinkag1.com/en-uk/products/greens-powder-pouch
[11] Huel. Huel Daily Greens, UK product page and prices, checked 4 and 9 November 2026. https://uk.huel.com/products/huel-daily-greens
[12] Huel. Huel Daily Greens formula explained, nutrition table and ingredients, checked 4 November 2026. https://uk.huel.com/pages/the-huel-daily-greens-formula-explained
[13] Myprotein. Green Superfoods, UK product page, nutrition and prices, checked 4 and 9 November 2026. https://www.myprotein.com/p/sports-nutrition/green-superfood-blend/13723225/
[14] Bulk. Complete Greens Powder, UK product page, nutrition and prices, checked 4 and 9 November 2026. https://www.bulk.com/uk/products/complete-greens/bble-cgre
[15] MenTools. One-A-Day Multivitamin, product page, nutritional information and prices. https://www.mentools.co/product/one-a-day-multi-vitamin/