Skip to content
  • ☰ Category
  • New product
  • Set product
  • Brand List
  • Blog
  • FAQ
  • Holiday Notice
MamiGo
Popular searches
Pharmaceuticals and Quasi-drugs Health Foods Food Sweets Beverages Daily necessities Beauty Catalog Featured Brand Blog Business Days Information Frequently Asked Questions FAQ What is MamiGo? Contact Us

Your cart is empty

Continue shopping
0Cart(¥0 JPY)
  • ☰ Category
    • Rohto Pharmaceutical Rohto Cool 40α 12ml OTC Medicines and Quasi-drugs
    • 日本生物化学 キトサン 菊 350錠 Health Foods
    • ORIHIRO Purunto Konjac Jelly Pouch Apple + Grape 12 pieces Food
    • Sweets
    • Beverages
    • 日用品 Daily necessities
    • 美容 Beauty
    • 비염
      Rhinitis
    • 위장약
      Gastrointestinal Medicine
    • 정장 / 변비약
      Intestinal Regulators & Laxatives
    • 피부외용약
      Topical skin medicine
    • 진통소염제
      Pain Relief and Anti-inflammatory Medicine
    • 目薬
      Eye Drops
    • 영양보급
      Nutritional Supplementation
    • 특수의약품
      Special OTC Medicines
    • 生活習慣病
      Lifestyle-related diseases
    • 医療用品
      Medical Supplies
    • 감기약
      Cold Medicine
    • エスエス製薬 エスエス ブロン錠 60錠
      Cough and Throat Medicine
    • 해열 진통제
      Antipyretic Analgesics
    • 건강관리식품
      Health Care Foods
    • 美容・ダイエットケア食品
      Beauty and Diet Care Foods
    • バランス栄養食品
      Balanced Nutritional Food
    • 特定保健用食品
      Specified Health Food Products
    • 栄養機能食品
      Nutritional Functional Foods
    • シュワーべギンコ イチョウ葉エキス 90粒
      Functional Food with Health Claims
    • 조미료
      seasoning
    • 香辛料
      Spices
    • カレー・シチュー
      Curry / Stew
    • 간단 요리
      Easy Cooking
    • スープ
      Soup
    • 면류
      Noodles
    • 곡물류
      Grains
    • 분말류
      Powdered Products
    • 乾物類
      Dried Foods
    • 잼 / 스프레드
      Jam / Spread
    • 디저트
      Dessert
    • チョコレート
      Chocolate
    • ビスケット
      Biscuit
    • クッキー
      Cookie
    • スナック菓子
      Snack Confectionery
    • ケーキ
      Cake
    • パイ
      Pie
    • 和菓子
      Japanese Sweets
    • 米菓子
      Rice Snacks
    • 豆菓子
      Bean Snacks
    • こども菓子
      Children's Sweets
    • 飴
      Candy
    • グミ
      Gummy
    • 珍味
      Delicacies
    • 水
      Water
    • ソフトドリンク
      Soft drink
    • ノンアルコール
      Non-alcoholic
    • コーヒー
      Coffee
    • ラテ
      Latte
    • ココア
      Cocoa
    • 日本茶
      Japanese Tea
    • 紅茶
      black tea
    • 中国茶
      Chinese Tea
    • 健康茶
      Health Tea
    • 青汁
      Green Juice
    • その他の飲料
      Other Beverages
    • 家庭用医療用品
      Home Medical Supplies
    • 衛生用品
      Hygiene Products
    • 生活環境用品
      Living Environment Supplies
    • 洗剤
      Detergent
    • Kitchen Supplies
    • Cleaning Supplies
    • ベビー・マタニティ用品
      Baby & Maternity Products
    • 化粧品
      Cosmetics
    • バス用品
      Bath Products
    • ボディケア用品
      Body Care Products
    • ヘアケア用品
      Hair Care Products
    • オーラルケア用品
      Oral care products
    • エチケット用品
      Etiquette Supplies
  • New productNew
  • Set product
  • Brand List
  • Blog
  • FAQ
  • Holiday Notice
Home Shop Nichinichi Pharmaceutical Lactic Acid Bacteria Series Protesan R
プロテサン R
プロテサン R
Nichinichi pharmaSKU: 4515158190566

Protesan R

¥15,206 JPY /
Shipping calculated at checkout.

selection 62 packets
プロテサン R
Protesan R
¥15,206 JPY /
selection 62 packets
 
 
Nichinichi Pharmaceutical · Protesan series · Standard for daily use

Protesan R

Patented lactic acid bacteria material FK-23 · Equivalent to 1 trillion per packet · Equivalent to 100L of yogurt · 62 packets included

🦠 Equivalent to 1 trillion per packet 🥛 Equivalent to 100L of yogurt ✅ Allergen-free 🌿 Contains indigestible dextrin
🔬 What is the lactic acid bacteria material "FK-23" used in Protesan R?

FK-23 is a lactic acid bacteria material where Nichinichi Pharmaceutical independently selected the lactic acid bacteria "Enterococcus faecalis" derived from the human intestine and maximized its functionality through heat treatment. The heat-sterilized bacteria (dead bacteria) are efficiently absorbed from the Peyer's patches in the small intestine and also function as food for the diverse resident bacteria of the gut flora. It is characterized by being able to concentrate an amount of bacteria impossible with live bacteria into one packet and holds six patents in the health and beauty fields. It has been researched and manufactured for over 30 years since the company's founding in 1987 and is Nichinichi Pharmaceutical's main material.

⭐
Features of Protesan R: FK-23 + indigestible dextrin (dietary fiber) included

Protesan R contains FK-23 (heat-treated lactic acid bacteria) plus both indigestible dextrin (dietary fiber) and oligosaccharides. Compared to Protesan S (oligosaccharides only), it is a balanced formulation with enhanced auxiliary ingredients supporting the intestinal environment. It has been featured multiple times in women's magazines' lactic acid bacteria specials and is widely used by those working on daily health and beauty care.

🔵 About the product

Protesan R is positioned as the standard for daily health maintenance in Nichinichi Pharmaceutical's long-selling "Protesan" supplement series. It contains FK-23 lactic acid bacteria material equivalent to 1 trillion per packet (1.2g), equivalent to 100L of yogurt.

Among the Protesan series lineup (B: 300 billion → R: 1 trillion → S: 4 trillion → S3: 12 trillion), Protesan R is a central product praised for its cost performance and ease of use, allowing the daily recommended amount to be taken with 1 to 2 packets.

Unlike Protesan S, it also contains indigestible dextrin (dietary fiber) to support the intestinal environment, making it a more balanced raw material design. Fragrance-free, sweetener-free, allergen-free formulation suitable for a wide range of people from infants to the elderly.

✨ Four features
🦠
Equivalent to 1 trillion per packet, ideal for daily use
Contains FK-23 equivalent to 100L of yogurt and 1 trillion per packet. Designed to cover the daily recommended intake with 1 to 2 packets, making it easy to continue daily.
🌿
Contains indigestible dextrin + oligosaccharides
Formulated with both dietary fiber (indigestible dextrin) and oligosaccharides to support the intestinal environment. A formulation that supports the gut comprehensively along with FK-23.
✅
Allergen-free, fragrance-free, sweetener-free
Allergen-free formulation that does not contain 28 specified allergenic ingredients. No fragrance or sweeteners used, with almost no taste or smell, making it easy to take even when appetite is low.
💧
Granule type that can be taken as is with water
Granule Stick packaging that can be taken as is with water or other drinks. Can be mixed into tea, juice, or yogurt, and is heat resistant so it can also be added to miso soup.
🌟 Expected health support
🦠 Daily supplementation of FK-23 lactic acid bacteria 🌿 Support for intestinal environment and gut flora 🌾 Supplementation of dietary fiber (indigestible dextrin) 💪 Daily health maintenance and beauty care 🍃 For those concerned about seasonal and environmental changes

* This product is a food (lactic acid bacteria-containing food) and is not intended for diagnosis, treatment, or prevention of diseases.

🔬 Learn about Nichinichi Pharmaceutical's three lactic acid bacteria materials

Nichinichi Pharmaceutical's lactic acid bacteria supplements use three types of lactic acid bacteria materials processed differently. All are made from the same bacterium "Enterococcus faecalis," but their properties and names differ depending on the depth of processing.

🔥
FK-23
Heat treatment only

A material where Enterococcus faecalis is heat sterilized and concentrated. The bacterial body remains intact and is absorbed from the Peyer's patches in the small intestine. Used in the Protesan series (B, R, S, S3). Holds six patents.

⚗️
LFK (FK-23 bacterial extract)
Heat treatment + enzyme treatment

A material where FK-23 is further enzyme treated to dissolve the bacterial cell wall and extract internal components (nucleic acids, vitamins, minerals, etc.). Used in the Chisa series (Ferna, White). Holds six patents.

✨
MK-116
Both FK-23 and LFK processed

A unique special processed lactic acid bacteria material from Nichinichi Pharmaceutical that combines the characteristics of both FK-23 and LFK. Used in Protesan Every II.

📊 Nichinichi Pharmaceutical Lactic Acid Bacteria Supplements Full Series Comparison

Compare the full lineup of Nichinichi Pharmaceutical's lactic acid bacteria supplements including Protesan R. Choose the product that suits you based on differences in materials, concentration, and formulation.

Comparison items FK-23 material (heat treatment) LFK material (heat + enzyme treatment) MK-116 (FK-23 + LFK)
Protesan B 🔵 Protesan R (this product) Protesan S Protesan S3 Chisa Ferna Chisa White Every II
Lactic acid bacteria material FK-23 FK-23 FK-23 FK-23 LFK LFK MK-116
Processing method Heat treatment only Heat treatment only Heat treatment only Heat treatment + enzyme treatment Heat treatment + enzyme treatment
(Both FK-23 and LFK)
Content per packet 300 billion 1 trillion 4 trillion 12 trillion 2.2 trillion 650 billion 1.2 trillion
Yogurt equivalent 30L 100L 400L 1,200L 220L 65L 120L
Amount per packet 1.0g 1.2g 1.5g 3.3g (soluble type) 1.5g 1.0g 1.0g
Quantity 31 packets 62 packets 62 packets 31 packets / 186 packets 30 packets 30 packets 62 packets
Oligosaccharides ✅ ✅ ✅ — — — ✅
Indigestible dextrin ✅ ✅ — — — — ✅
Intake without water ✅ Allowed ✅ Allowed ✅ Allowed ❌ Requires dissolution ✅ Allowed ✅ Allowed ✅ Allowed
Allergens Free Free Free Free Eggs Eggs and gelatin Eggs
Expiration Date 3 years From production 3 years From production 3 years From production — 2 years From production — —
🧭 Which one to choose? — Guide by purpose
🌱 Protesan B — For beginners and children
For those trying FK-23 for the first time, infants, and those with weak health. The gentlest concentration starting from 1 packet per day (300 billion bacteria). Gently supports with oligosaccharides and dietary fiber.
🔵 Protesan R (this product) — Standard for daily use
Contains FK-23 equivalent to 1 trillion bacteria per packet. Balanced formula with oligosaccharides and indigestible dextrin. 1–2 packets cover the daily recommended amount. A popular product featured in women's magazines as a standard for daily health and beauty care.
🟢 Protesan S — Convenient high-concentration FK-23
Contains FK-23 equivalent to 4 trillion bacteria per packet. Stick granule type that can be taken as is without dissolving in water. For those who want to continue high-concentration FK-23 daily.
🟡 Protesan S3 — Highest concentration in the series
Contains FK-23 equivalent to 12 trillion bacteria per packet (3 times that of Protesan S). Water-soluble type. For those who want to concentrate intake of FK-23 to the maximum. Available in 31 and 186 packet sizes.
🔵 Chisa Ferna — Simply high-concentration LFK
Contains LFK, enzymatically treated FK-23, equivalent to 2.2 trillion bacteria. Material extracted including intracellular components. For those who want to take pure, high-concentration LFK.
🌸 Chisa White — LFK + beauty ingredients together
In addition to LFK, contains beauty ingredients such as collagen, hyaluronic acid, vitamin C, and mandarin powder. For those who want to care for beauty and LFK simultaneously. Easy to drink with a yogurt flavor.
🟣 Protesan Every II — Both FK-23 and LFK properties
Contains MK-116 material specially processed with both FK-23 and LFK. Also includes oligosaccharides and indigestible dextrin. For those who want the benefits of both FK-23 and LFK.
Nutrition Facts Per packet (1.2g)
Nutritional Components Per packet (1.2g)
Energy 4.4 kcal
Protein 0.13 g
Fat 0.0084 g
Carbohydrates 0.96 g
Salt Equivalent 0.00049–0.0011 g
Potassium 3.6–7.9 mg
Phosphorus 9.0 mg

* Some packages may display nutritional values per 2 packets (energy 8.9kcal, protein 0.25g, fat 0.017g, carbohydrates 1.9g, salt equivalent 0.0012g, potassium 13mg).

🥄 Easy way to drink
1
📦
Take out 1–3 packets
Daily recommended amount is 2–6 packets
2
💧
With your preferred beverage
With water, tea, juice, etc.
3
😋
Drink as is
No need to dissolve
💧 Water or lukewarm water 🍵 Tea 🧃 Juice 🍜 Miso Soup 🥛 Yogurt

* Please consume with water or other beverages. The daily recommended amount is 2–6 packets, adjustable according to your condition and purpose. The lactic acid bacteria material is heat-resistant, so it can be mixed into warm drinks or dishes.

📋 Product Specifications
Product Name Lactic Acid Bacteria-Containing Food (Granules)
Net Weight 74.4g (1.2g × 62 packets)
Lactic Acid Bacteria Content (per packet) Equivalent to 1 trillion bacteria (equivalent to 100L of yogurt)
Daily Recommended Amount 2–6 packets
Ingredients Lactic acid bacteria (heat-treated) (domestically produced), oligosaccharides, indigestible dextrin, dextrin, cornstarch, guar gum hydrolysate / cellulose
Allergens No use of any of the 28 specified allergenic ingredients (Allergen-Free)
Expiration Date 3 years From production
Storage Method Store in a cool, dry place away from direct sunlight
Country of Manufacture Japan
Manufacturer Nichinichi Pharmaceutical Co., Ltd.
Model Number PR62
✅ Allergen-Free (No use of any of the 28 specified allergenic ingredients)

This product does not contain any of the 28 specified allergenic ingredients (eggs, milk, wheat, shrimp, crab, peanuts, buckwheat, walnuts, soybeans, beef, pork, chicken, gelatin, abalone, squid, salmon roe, orange, cashew nuts, kiwi fruit, sesame, salmon, mackerel, banana, peach, yam, apple, almond, matsutake mushroom). It is safe for people with food allergies from infants to the Elderly.

Usage Precautions
⚠️ Please check before use
  • This product is a food (lactic acid bacteria-containing food). It is not a medicine. It is not intended for diagnosis, treatment, or prevention of diseases.
  • Follow the daily recommended amount (2–6 packets) and avoid excessive intake. Consuming large amounts will not cure diseases or enhance health.
  • If you are pregnant, breastfeeding, under medical care, or taking medication, please consult your doctor before use.
  • If you feel it does not suit your constitution, reduce the amount used or discontinue use.
  • Do not consume products past their expiration date.
  • Keep out of reach of infants and toddlers.
  • Consume as soon as possible after opening.
  • Maintain a balanced diet based on staple foods, main dishes, and side dishes.
📦 Storage Precautions
  • Store in a cool, dry place away from direct sunlight.
  • Consume as soon as possible after opening.
  • Keep out of reach of infants and toddlers.

●Ingredients
Lactic acid bacteria (heat-treated) (domestically produced), oligosaccharides, indigestible dextrin, dextrin, cornstarch, guar gum hydrolysate / cellulose

●Nutritional Information (per packet)
Calories: 4.4 kcal
Protein: 0.13 g
Fat: 0.0084 g
Carbohydrates: 0.96 g
Equivalent salt: 0.00049–0.0011 g
Potassium: 3.6–7.9 mg
Phosphorus: 9.0 mg

●Dosage and Administration
Take with water or other beverages.
Recommended dosage: 2–6 packets per day

●Storage Instructions
Store in a cool, dry place away from direct sunlight.


Related categories
All products 親への健康ギフトHealth Gifts for Parents プロテサン BNichinichi Pharmaceutical Lactic Acid Bacteria Series 医薬品・健康食品Pharmaceuticals & Health Supplements 11-1 乳酸菌Probiotics
My Account
Order Tracking
Chat AI
お買い物
  • Category List
  • Brand List
  • New product
  • Set product
Terms and Policies
  • Terms of Use
  • Notation based on the Act on Specified Commercial Transactions
  • Personal Information Handling Policy
  • Shop Information
イベント情報を受け取る

We will notify you of the latest news, gifts, discount events, and more before anyone else.

American Express
Apple Pay
Google Pay
JCB
Mastercard
Shop Pay
Visa

© 2026 MamiGo, All rights reserved.