The price on the bottle tells you almost nothing about collagen value. That “bargain” £12 capsule bottle can cost 10x more per gram than a £34 tub of powder. That’s why we built this calculator — it strips away the marketing and shows you one number that matters: your true cost per gram of collagen.
How to Use It
Pick your preferred format (powder, drink, capsules, or liquid sachets), filter by source if you have a preference between bovine and marine, and sort by whatever matters most to you. The default ranking is price per gram, which we think gives the most honest picture of value.
Click any row to expand the full details including monthly cost, collagen types, added ingredients, and a direct link to buy.
One tip: toggle the “Subscribe prices” switch to see how subscriptions change the value rankings. Some products jump two tiers when you factor in the discount.
Why Price Per Gram Matters More Than Price Per Bottle
Most people compare collagen supplements by looking at the total price, which is a bit like comparing cars by their paint colour. A £15 bottle of capsules containing 1,200mg per serving across 30 days gives you 36g of total collagen. A £34 tub of powder at 13g per serving for 30 days delivers 390g. The powder gives you more than ten times the collagen for roughly double the price.
The format matters enormously too. Powders consistently dominate on value because there’s no capsule shell, no liquid filler, no gummy base eating into the weight. You’re paying almost entirely for collagen. Liquid sachets and capsules charge a convenience premium that can push the cost per gram up by 5-10x compared to an unflavoured powder.
That said, the cheapest option isn’t always the right one. If you hate mixing powder into your coffee and it means you skip days, a slightly pricier liquid sachet that you actually take consistently will deliver better results than a bargain powder gathering dust in your cupboard. Compliance beats cost every time.
What Counts as a Good Price for Collagen in the UK?
Based on our analysis of the current UK market, here’s roughly where the value tiers fall:
- Under 5p per gram — exceptional value, typically large format powders
- 5p to 8p per gram — great value, most quality powders sit here
- 8p to 14p per gram — good value, includes premium powders and well-priced capsules
- 14p to 20p per gram — fair, usually capsules or flavoured drinks
- 20p to 40p per gram — premium territory, liquid sachets and convenience formats
- Over 40p per gram — luxury pricing, typically low-dose capsules or specialty blends
These tiers shift when you factor in subscription discounts, which is why the toggle exists in the tool above.
A Note on Clinical Dosing
Price per gram is important, but so is actually getting enough collagen to make a difference. The clinical research on collagen supplementation consistently uses daily doses between 2,500mg and 15,000mg, with most skin benefit studies landing around 5,000mg to 10,000mg.
Some products in this comparison contain less than 5,000mg per serving. They might score well on price per gram, but if you need to double or triple the serving to reach an effective dose, the real cost changes. We’ve flagged these in the tool so you can factor it into your decision.
Pricing & Accuracy Disclaimer – Prices shown in this tool were verified in February 2026 and are sourced from Amazon UK and brand websites. Prices, availability, and subscription discounts can change at any time. We do our best to keep this tool up to date, but we recommend checking the retailer’s listing for the most current price before purchasing. Collagen content per serving is based on manufacturer-stated values on packaging and product listings.
Affiliate Disclosure – This page contains affiliate links. When you buy through links on this site, we may earn a small commission at no extra cost to you. This helps us keep BovineCollagen.co.uk running and free to use. Our rankings and ratings in the tool above are based entirely on objective price-per-gram calculations and are not influenced by affiliate relationships. We feature products regardless of whether we earn a commission from them. For more information, see our full affiliate disclosure.
Not Medical Advice – The information on this page is for general informational purposes only and is not intended as medical advice. Collagen supplements are not a substitute for a balanced diet or professional medical guidance. If you have specific health concerns or conditions, consult a qualified healthcare professional before starting any supplement regimen. Clinical dosage references cited in this tool are based on published research and are provided for context only.