THE UK'S #1 RATED 10G MARINE COLLAGEN SUPPLEMENT FOR MEN & WOMEN. Clinically Studied for Real Results. The only marine collagen liquid sachet with a power-packing 10g of premium marine collagen, plus added vitamins B and C, Kollo is specially formulated to support whole-body health. Clinical studies show that taken daily for 12 weeks, Kollo's collagen supplement helps to promote healthier skin, hair and nails, while supporting stronger bone, joint and cartilage function.