Collatein, the collagen-derived protein brand from I-ne Co., Ltd. (headquartered in Chuo-ku, Osaka), is releasing two limited-edition new flavors: Mango Smoothie and Lychee & Salt. Both flavors launch on May 29, 2026.
Product Name: Collatein Collagen Protein (Mango Smoothie / Lychee & Salt) (Foods with Nutrient Function Claims)
Volume / Price: 210g (14 servings) / ¥2,916 (tax included)
Release Dates / Availability:
- May 29, 2026 (Friday) — Exclusive early launch on Qoo10
- June 1, 2026 (Monday) onward — Rakuten Ichiba, Amazon, Yahoo! Shopping
- June 10, 2026 (Wednesday) onward — 29 Loft locations nationwide and the Loft Net Store
What Is Collatein?
Collatein proposes a new category called "collagen protein," targeting a gap in the beauty supplement market. Unlike conventional protein products, it features refreshing flavors such as Lemonade and Peach Tea that have been well received by consumers.
The product's formulation was supervised by Yoshizumi Yamaguchi, director of Daikanyama Yamaguchi Orthopaedic Clinic, who is trusted by professional actors and top athletes. Its defining characteristic is a proprietary ingredient composition designed to support a supple, healthy physique — centering on collagen-derived protein and incorporating a well-balanced blend of iron, zinc, vitamins, and minerals.
Within just three months of launch, Collatein achieved a cumulative 10-category No. 1 ranking on Rakuten Ichiba and Amazon. It also ranked No. 1 in the monthly "Calorie Support Supplement" category on @cosme, Japan's largest beauty and cosmetics information site, and earned 2nd place in MERY's Best Cosmetics "H2 2025 Editorial Pick — Inner Care" category.
New Limited-Edition Summer Flavors
Mango Smoothie
A dessert-like flavor that pursues the golden ratio of sweetness and tartness from tropical fruit. The juicy aroma reminiscent of a café drink and a clean, smooth finish make it an ideal choice as a morning meal replacement or a relaxing refreshment during early summer.
Lychee & Salt
Formulated to minimize the chalky texture typical of protein products, this flavor delivers a transparent, freshly-squeezed fruit quality. The exotic lychee aroma that spreads the moment it touches the palate, combined with a smooth, refreshing finish, makes it a perfect post-workout or post-bath hydration option.
Product Features
- Collagen-derived protein accounting for 90% of the total protein content — 10.5g of protein per serving (per 15g serving), supporting lean and healthy body composition
- "Tea Flower Saponin" — included to support body shaping goals
- 12 nutrient function food ingredients*1 and 3 beauty ingredients*2 — covering nutritional gaps common during dieting, with no added coloring or preservatives
*1 Vitamins (A, B1, B2, B6, B12, C, D, E), niacin, pantothenic acid, folic acid, iron
*2 Dietary fiber, lactic acid bacteria, tea flower saponin
Existing Lineup
In addition to the two new limited-edition flavors, Collatein's existing lineup includes Lemonade and Peach Tea flavors.
Collatein Collagen Protein — Lemonade & Peach Tea (Foods with Nutrient Function Claims)
210g (14 servings) / ¥2,916 (tax included)
Collatein Trial Pack — Lemonade & Peach Tea (Foods with Nutrient Function Claims)
15g (1 serving) / ¥270 (tax included)
