Best Collagen Gummies UK: Marine vs Bovine, Doses and Value

Last updated 26 October 2026.

Written by the GUUDIES Editorial Team.

The best collagen supplement for you depends on two things: how much collagen you want per day, and whether you eat fish or beef. Collagen gummies are the easiest format to keep taking but carry milligrams, while powders carry grams. This guide sets out the differences honestly so you can choose.

Quick answer

• Want the higher doses used in studies (several grams a day)? A powder is the practical choice.
• Want collagen as part of an easy daily routine? A gummy works, as long as you know it provides milligrams, not grams.
• Pescatarian? Choose marine. Avoid fish? Choose bovine. Vegan? No supplement contains vegan collagen.

Marine vs bovine collagen

Both are hydrolysed into short peptides for supplements. Type I is the most abundant collagen in the body and the main structural protein in skin, tendon and bone (NCBI StatPearls).

Doses: what the studies used vs what gummies contain

Clinical studies on collagen peptides and skin have typically used 2.5 to 10g a day for 8 to 12 weeks (for example Proksch et al., 2014, which used 2.5g or 5g a day). A single collagen gummy usually carries a few hundred milligrams. That gap matters: you would need many gummies to match a study dose. There are no authorised health claims for collagen itself in Great Britain.

What does carry authorised claims are some of the nutrients often paired with collagen. On the GB nutrition and health claims register, vitamin C contributes to normal collagen formation for the normal function of skin, and biotin contributes to the maintenance of normal skin and normal hair.

How to judge value

1. Find the milligrams of collagen per gummy and the gummies per day.
2. Work out collagen per day and cost per day at the price you will actually pay after any introductory offer.
3. Check sugar per day, since some products suggest several gummies.
4. Check whether it is hydrolysed and names the source (marine or bovine).

The GUUDIES Marine Collagen gummy

The Marine Collagen gummy carries 200mg of hydrolysed marine collagen peptides (Type I and III) with 100µg of biotin (200% NRV), peach flavour, pectin based. It contains fish, so it is not vegan and is unsuitable for anyone with a fish allergy. The Daily Greens+ gummy in the same pouch adds 80mg of vitamin C (100% NRV), which contributes to normal collagen formation for the normal function of skin.

200mg is a modest amount of collagen. If a high collagen dose is your priority, a powder will suit you better. If you want collagen alongside a multivitamin and four other gummies in one daily pouch, GUUDIES does that. The other five gummies are vegan.

Common questions

What is the best collagen supplement in the UK?

For higher daily doses, a hydrolysed collagen powder. For convenience, a gummy. Choose marine if you eat fish, bovine if you do not.

Is marine collagen better than bovine?

Neither is proven better. Marine is mostly Type I and suits pescatarians; bovine provides Types I and III. Choose based on your diet and allergies.

Do collagen gummies work?

Studies used grams of collagen a day; gummies usually contain milligrams. No health claims for collagen are authorised in Great Britain. Vitamin C, often included, contributes to normal collagen formation for the normal function of skin.

Is there vegan collagen?

No. Products labelled vegan collagen contain nutrients involved in the body's own collagen formation, not collagen.

How long should I take collagen for?

Studies typically ran for 8 to 12 weeks. Take it daily at the label dose.

Related reading

• Marine collagen vs bovine collagen
• Collagen gummies and skin
• The GUUDIES Marine Collagen gummy