Updated October 1, 2026 · ThriveCue Editorial Team
MaximumSlim vs Protein Works
What sets them apart
| Compare | MaximumSlim ReviewVisitVisit |  Protein Works |
|---|---|---|
| Price from | $19.99 | £8.99 |
| Price per serving | $1.67 | £0.15 |
| Subscription discount | 20%Higher | 15% |
| Money-back period | 60 days | 180 daysHigher |
| Third-party tested | Not confirmed | No |
| Certifications | Organic | Not confirmed |
| Markets | Not confirmed | GB, IE, FR |
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- Protein Works scores higher overall: 9.4 vs 9.1.
- Subscription discount is higher at MaximumSlim: 20% vs 15%.
- Money-back period is higher at Protein Works: 180 days vs 60 days.
- Support channels: only Protein Works offers Chat, Phone.
- Products: only Protein Works offers Omega 3, Collagen, Sleep stress.
- Diets: only Protein Works offers Vegan, Vegetarian.
Our verdict on each
MaximumSlim
MaximumSlim suits US buyers who want a broad supplement range at a low entry price and a per serving cost that repeats cheaply. The brand scores 9.1 overall, with a starting price of $19.99 and a 60 day money back window on the Original Green Coffee line.
Protein Works
Protein Works suits shoppers who want a wide range of daily supplement categories at a low entry price, with £8.99 to start. Buyers who put independent lab testing at the top of their list should look further, since third-party testing is not offered.
Score breakdown
| Area | MaximumSlim | Protein Works |
|---|---|---|
| Cost | 9.1Entry price of $19.99 and $1.67 a serving carry the 9.1 score. | 9.8HigherEntry pricing of £8.99 and £0.15 per serving sit at 15 of 121 brands. |
| Offer | 9.1multivitamins, vitamins minerals and greens across the catalogue, plus 20% off subscriptions, backs the 9.1 score. | 9.2HigherRange covers multivitamins, vitamins minerals and omega 3, with 15% off subscriptions and 180 days for returns. |
| Trust | 8.8organic certification and gluten free labelling underpin the 8.8 score. | 8.9HigherThird-party testing is not offered, though email, chat and phone and 2013 add some confidence. |
How they place
| Ranking | MaximumSlim | Protein Works |
|---|---|---|
| Vitamins and multivitamins | 3 of 362 | 17 of 362 |
| Gut health, greens and collagen | 4 of 172 | 17 of 172 |
| Protein powders | 3 of 111 | 8 of 111 |
| Creatine, pre-workout and electrolytes | 3 of 93 | 9 of 93 |
| Meal replacement shakes | 3 of 35 | 5 of 35 |
Where these facts come from
MaximumSlim
- maximumslim.com: 10 facts, checked September 30, 2026
Protein Works
- theproteinworks.com: 12 facts, checked September 30, 2026
Every fact side by side
| Fact | MaximumSlim | Protein Works |
|---|---|---|
| Products | Multivitamins, Vitamins minerals, Greens, Electrolytes, Probiotics | Multivitamins, Vitamins minerals, Omega 3, Probiotics, Greens, Collagen, Sleep stress, Nootropics, ElectrolytesCovers more |
| Diets | Gluten free | Vegan, Vegetarian, Gluten freeCovers more |
| Legal entity | Maximum Slim, LLC | Class Delta Limited |
| Headquarters | United States | United Kingdom |
| Founded | Not confirmed | 2013 |
| Support channels | Email, Help centre | Email, Chat, Phone, Help centreCovers more |
Sports nutrition
| Fact | MaximumSlim | Protein Works |
|---|---|---|
| Protein per serving (g) | 26Higher | 20 |
| Flavours (flavours) | Not confirmed | 8 |
Where each stands against the rest
| Fact | MaximumSlim | Protein Works | Median |
|---|---|---|---|
| Subscription discount | 20%above the median | 15%at the median | 15% |
| Money-back period | 60 daysabove the median | 180 dayshighest quarter | 30 days |
Median across 167 listed brands.
Pros and cons
MaximumSlim
Pros
- Entry price of $19.99 ranks 37 of 157 brands, so a single pack is an easy outlay.
- A subscription takes 20% off later orders, lowering the renewal side of the bill for regular buyers.
- The range covers multivitamins, vitamins minerals and greens, far broader than ProSolution Plus, whose catalogue is vitamins minerals.
Cons
- Per serving ranking of 85 of 121 is weaker than the entry price ranking, so daily use costs more than the pack price implies.
- Support runs on email and help centre, with no phone or chat line in the listed options, so quick answers depend on written replies.
- Product types stop at multivitamins, vitamins minerals and greens, while DocMorris lists multivitamins, vitamins minerals and omega 3, so sleep, stress and collagen buyers get nothing from this range.
Protein Works
Pros
- Covers a wide list of categories in multivitamins, vitamins minerals and omega 3, from multivitamins to electrolytes.
- Entry point of £8.99 with a per serving cost of £0.15, ranked 15 of 121 brands on price per serving.
- The range suits different diets, with vegan, vegetarian and gluten free options on the multivitamin formula.
Cons
- Delivery covers GB, IE and FR, which is a narrower set of markets than some pharmacy-led rivals.
- The range carries 8 flavours on its whey protein line, but the entry pricing and per serving cost come from the multivitamin product.
- The £8.99 entry price ranks 23 of 157 brands, so the price on the front of the pack sits mid-table.
Who each suits
MaximumSlim
Who it suits
- US buyers who want multivitamins, vitamins minerals and greens ordered from a single supplier
- Daily supplement users who judge cost by $1.67 a serving rather than the pack price
- Shoppers who want a 60 day money back window before committing to a greens coffee order
Who should look elsewhere
- Buyers after sleep, stress or collagen lines: DocMorris lists multivitamins, vitamins minerals and omega 3, none of which the MaximumSlim range covers.
- Shoppers who want a short, single category catalogue: ProSolution Plus stays on vitamins minerals and keeps the range narrow.
- People who only want vitamins and minerals listed: TestRX covers vitamins minerals and nothing wider, which is simpler to shop.
Protein Works
Who it suits
- Shoppers who want vitamins, probiotics, greens, collagen, sleep and stress, nootropics and electrolytes from one brand.
- People on vegan, vegetarian and gluten-free diets, covered by vegan, vegetarian and gluten free.
- Buyers in the United Kingdom, IE and FR who value a low per serving cost of £0.15.
Who should look elsewhere
- Buyers who need third-party tested products, since DocMorris and other pharmacy brands list independent testing in this category.
- Anyone outside GB, IE and FR, where the GB, IE and FR delivery list does not reach.
- People who want licensed or prescription oversight, as no licence appears against this brand.
Country by country
| Country | MaximumSlim | Protein Works |
|---|---|---|
| France | No | Yes |
| Ireland | No | Yes |
| United Kingdom | No | Yes |
Questions about each
MaximumSlim
How much does MaximumSlim cost to start with?+
The Original Green Coffee pack is listed at $19.99, and each serving works out at $1.67. Buyers sampling a single product can judge the outlay from the pack price, while daily users should read the per serving figure, since that is the line that repeats.
What does subscribing change on the bill?+
A subscription takes 20% off later orders, so the entry price and the renewal price are separate figures. Shoppers who will reorder can plan around the lower number, and shoppers who expect to stop after a short run of orders should not count on the saving.
Protein Works
How much does Protein Works cost to start?+
The entry price is £8.99 for the multivitamin product. The same product works out at £0.15 per serving, so a larger pack lowers the cost per serving. The per serving figure ranks 15 of 121 brands in this category.
Is there a discount for ordering repeatedly?+
Yes, subscriptions carry a 15% discount against the entry price of £8.99. The discount applies to repeat orders rather than the first purchase, so it only shows on the ongoing cost. Orders placed on a subscription continue until you change them.
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