Marine collagen is a hydrolysed form of Type I collagen sourced from fish. It's broken down into smaller peptides so your body can absorb it more easily than other forms of collagen. Type I collagen is the most abundant protein in your skin, hair, nails, bones, and connective tissue - making marine collagen a natural choice for supporting these areas.

Kollo delivers 10,000mg of Naticol® clinical-grade marine collagen per serving - the exact dose used in human clinical studies. Every product is made in the UK, Informed Choice certified, and blended with 100% RDA Vitamin C, B-vitamins, and L-Lysine to support absorption. We're the UK's most awarded liquid collagen brand, trusted by over 7,000 5-star reviewers.

Marine collagen is absorbed up to 1.5x faster than bovine collagen thanks to its smaller peptide size. It's also a cleaner source - free from mammalian proteins - and more sustainable when responsibly sourced. Bovine collagen contains both Type I and Type III, while marine collagen delivers concentrated Type I, the type most responsible for skin, hair, and nail health.

Yes - marine collagen is particularly beneficial during menopause, as oestrogen decline accelerates collagen loss in skin, hair, and joints. Many women pair Kollo marine collagen with our Balance+ menopause formula for comprehensive support through hormonal change.

Most people notice improvements in skin hydration and hair strength within 4–8 weeks of daily use. Joint support benefits often take 8–12 weeks. Consistency matters more than dose size, marine collagen works best when taken every day as part of your routine.

Marine collagen is considered safe for most adults when taken at recommended doses. Mild side effects like bloating or digestive discomfort are rare and usually resolve within a few days. Kollo marine collagen is Informed Choice certified and tested for heavy metals, allergens, and purity. If you have a fish or shellfish allergy, or are pregnant or breastfeeding, consult your doctor before use.

Clinical research suggests 10,000mg per day is the optimal dose for visible results - which is exactly what you get in every Kollo serving. Lower doses (2,500–5,000mg) are common among cheaper brands, but the human studies on Naticol® marine collagen were conducted at the full 10,000mg dose.