2025年 July

10 Best whey in 日本

Last Updated - 20/07/2025

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Best Choice
01

Optimum Nutrition

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On Amazon

ON Gold Standard 100% Whey Protein, Double Rich Chocolate, Main Ingredient WPI, 5 lb, Bottle Type (Optimum Nutrition)
9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Weight: 4.9 lbs (2.27 kg)
Regarding Counterfeit Products: Other than products sold and shipped by Amazon.co.jp may be imitation or illegal. Please do not purchase this product
Product Size (W x D x H): 8.0 x 8.0 x 10.8 inches (20.3 x 20.3 x 27
Packaging and contents may change without prior notice. Please acknowledge
Country of Origin: United States

￥12,812
02

Optimum Nutrition

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Gold Standard 100% Whey Protein, Double Rich Chocolate, 5 lbs (2.27 kg) (Genuine US Manufacturer)
9.7

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Protein 0.9 oz (24 g), BCAA 0.2 oz (5.5 g), Glutamine & Glutamic Acid 0.1 oz (4 g)
Please note that this product does not contain any unauthorized pharmaceutical ingredients, such as lactase, but the U.S. version (UPC: 748927028669) does contain lactase.
Of course, it also contains essential amino acids (EAA).
Authentic product direct from the US manufacturer.Special formula with low sweetness for Japan and other countries.(UPC: 748927051261)
3 types of whey protein including WPI (Whey Protein Isolate).

￥10,980
Best Value
03

REYS

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Reys Whey Protein, Supervised by Reiaki Yamasawa, 2.2 lbs (1 kg), Made in Japan, Contains 7 Vitamins, WPC Protein, Whey Protein (Cafe au Lait Flavor)
9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Uses 100% Selected Whey Protein: Uses 100% whey protein with fast absorption speed as a protein ingredient. It is also formulated with 7 types of vitamins that are indispensable for everyday use (V.B1, V.B2, V.B6, V.C, V.D, niacin, and pantothenic acid)
Recommended intake timing: Estimate: 2 to 3 times a day. Before and after exercise: For nutrition during training. For snacking: Easy protein supplement. ■At night: For protein supplement at the end of the day
Delicious / Easy to Melt, Affordable Price: Over 1 million YouTube registers. The long-awaited Whey Protein (WPC) was born from REYS, supervised by Takaaki Yamasawa. With a focus on deliciousness, the protein has been carefully selected, and prototypes repeatedly made to produce flavor, dissolve, and affordability. Delicious with water
(We aim to make you want to drink every day) Café Ole flavor: Uses a special coffee extract extracted from the Arabica seed coffee beans produced in Colombia. Creamy and soothing sweetness
(How to eat) Based on the 3 spoons (about 1.1 oz (30 g)) of the included spoon, dissolve in 6.8 fl oz (200 ml) of cold water, etc

￥3,780
04

ザバス

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SAVAS Whey Protein 100, Rich Chocolat Flavor, 2.2 lbs (1 kg), Meiji (Amazon.co.jp Exclusive)
9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Size: 1kg x 1 bag
Package weight: 0.2 kg
Item model number: 2631432
Delicious and easy to drink protein for optimal muscle dissolvability

￥5,248
05

X-PLOSION（エクスプロージョン）

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On Amazon

X-PLOSION Whey Protein, 6.6 lbs (3 kg), Approx. 100 Servings, Milk Chocolate, Domestically Produced
9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

X-PLOSION: The brand that sponsors individuals including bodybuilder “Yokokawa Naotaka”, “Mirai Monster Hayato Aizawa” and the “Nippon Sport Science University Barbell Club”, for nutritional replenishment that helps to unleash the body's true potential.-
Features: 1. High quality at an affordable price, 2. Easy to dissolve in water and easy to drink,3. Smooth absorption,4. Rich in BCAA, etc,5. Great as a protein supplement.
Directions: Please add about 10.1 fl oz (300 cc) of water or fruit juice and about 1.1 oz (30 g, approx. four spoonfuls with the spoon included) of this product to a shaker or mixer.Keep the lid tightly closed and shake or mix for about 10 seconds.Maintain a good balance in your diet with staple foods, main dishes, and side dishes.*Consume immediately after dissolving it in water or juice.
Contents: 6.6 lbs (3 kg, Approx. 100 servings); Country of Origin: Japan (with ingredients from Germany); Flavor: Milk chocolate (whey protein); Consume it deliciously even with water; Taste an exquisite chocolate flavor similar to that of items from a famous store; *This product is made of the protein nutrient with no issue of doping.
(Nutrition Facts) (per 1.1 oz (30 g) serving) Energy: 117 kcal, Protein: 22.3 g, Fats: 2.0 g, Carbohydrate: 2.9 g, Sodium: 0.1 g, *BCAA Content: 5,084 mg (calculated); Ingredients: Contains mainly whey protein (contain traces of milk product), cocoa powder, milk, emulsifier (derived from soybean), artificial flavor, sweetener (sucralose, stevia).

￥8,399
06

Verifyst

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Verifyst Verifist 6.6 lbs (3 kg), Whey, Protein, 100% Berry Yogurt Flavor, Made in Japan, Large Capacity
9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Why Choose It: Based on a pre-survey, we created the protein that is currently requested for. Development professionals use multiple prototypes to produce the best formula from a myriad of ingredients, resulting in more than 0.8 oz (21 g) of protein that can be dissolved in water for a delicious drink
Recommended Drinking Method: Fill the shaker with 5.1 - 6.1 fl oz (150 - 180 ml) of cold water or milk, and add 1 spoon of spoon (about 30 g)), and after closing the lid, shake it for about 10 seconds (20 times)
Protein Powder
Challenge the Lowest Price: Verifist strives to deliver protein throughout Japan and is easy to reach for everyone. Now you want to reduce proteins that you drink everyday with a low price. This is a great solution for your body and health

￥6,999
07

Myprotein

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Myprotein Impact Whey Protein, Natural Chocolate, 5.5 lbs (2.5 kg)
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Size: 2.5kg (1)
Package Weight: 5.5 lbs (2.56 kg)
Item Model Number: MyProtein Impact Protein Nat Choco 2.5kg
Gender: unisex

￥9,187
08

オプティマムニュートリション(Optimum Nutrition)
17% Off

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On Amazon

Gold Standard 100% Whey Protein, Vanilla Ice Cream, 5 lbs (2.27 kg) (Genuine US Manufacturer)
8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Protein 0.9 oz (24 g), BCAA 0.2 oz (5.5 g), Glutamine & Glutamic Acid 0.1 oz (4 g)
Please note that this product does not contain any unauthorized pharmaceutical ingredients, such as lactase, but the U.S. version (UPC: 748927028706) does contain lactase.
Of course, it also contains essential amino acids (EAA).
Authentic product direct from the US manufacturer.Special formula with low sweetness for Japan and other countries.(UPC: 748927054798)
3 types of whey protein including WPI (Whey Protein Isolate).

￥10,980 ￥13,282 17% Off
09

GronG(グロング)

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On Amazon

GronG Protein, Whey Protein, 2.2 lbs (1 kg), Standard Chocolate Flavor, Contains 11 Vitamins
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Whey Protein 100 (Standard) Features: 1. Protein content: In the entire flavor of the series, we have designed the protein: 2.7 oz (75 g) or more (per 3.5 oz (100 g) *Not a waterless conversion). 2. Vitamin Blending: Contains 11 types of vitamins. 3. Domestic manufacturing: Manufactured in a domestic partnership factory with high quality control. 4. Spoon Included: Includes a convenient spoon. Protein shaker not included
How to make a protein drink: (1) Pour water (drink) about 5.3 fl oz (150 ml) in a shaker or mixer. Please adjust the amount according to your preference. (2) Add approximately 1.1 oz (29 g). 2 cups of 30cc spoons included with approximately 1.1 oz (29 g). Please use it as a guide. Please be sure to insert protein after use. (3) Close the lid and shake well for 10 seconds. (4) Finished. Do not leave it for a long time after completion and drink out as soon as possible
GronG is a total sports brand aiming to create a world with a lot of challenges
Contents: 33.5 oz (1,000 g); Flavor: Chocolate flavor; Recommended intake timing (estimate): For breakfast, after exercise, at the end of the day or when you have a little stomach. Country of Origin: Japan

￥3,480
10

VALX

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On Amazon

VALX BALX Whey Protein, 2.2 lbs (1 kg), Whey Protein, Chocolate Flavor, Protein, WPC Chocolate, Diet, Supervised by Yoshinori Yamamoto, Made in Japan
8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
Main highlights

Ingredients: Milky protein (made in the USA), cocoa powder, salt/flavoring, flavonoid pigment, sweetener (aspartame, L-phenylalanine compound, sucrose, acesulfame potassium), emulsifier (some parts include dairy, wheat, and soy)
(Thick Taste, Classic Chocolate Flavor) A proprietary blend of carefully selected cocoa powder. Rich cocoa flavor is captured in luxury. Enjoy the mellow mouth of milk even if it is broken with water
(Prominent for Development) Protein is one of the most important nutrients. The protein powder that supplements this is an indispensable item for health and beauty. This protein has a high proportion of protein, has a good taste and is easy to dissolve
(How to Use) Dissolve 2 spoons (approximately 1.1 oz (30 g) in cold water with 7.8 - 10.1 fl oz (200 - 300 ml). Estimated 2 to 3 times a day Recommended for pre-training, after training, snacks, and at night
(3 Special Points) 1. Delicious flavor: We strive for a taste that can be enjoyed with water. 2. Easy to dissolve: Unique formula makes it easy to dissolve. Reduces foam and mess. 3. Price: We offer this product at an affordable price

￥4,980

10 Best whey in 日本

ON Gold Standard 100% Whey Protein, Double Rich Chocolate, Main Ingredient WPI, 5 lb, Bottle Type (Optimum Nutrition)

Gold Standard 100% Whey Protein, Double Rich Chocolate, 5 lbs (2.27 kg) (Genuine US Manufacturer)

Reys Whey Protein, Supervised by Reiaki Yamasawa, 2.2 lbs (1 kg), Made in Japan, Contains 7 Vitamins, WPC Protein, Whey Protein (Cafe au Lait Flavor)

SAVAS Whey Protein 100, Rich Chocolat Flavor, 2.2 lbs (1 kg), Meiji (Amazon.co.jp Exclusive)

X-PLOSION Whey Protein, 6.6 lbs (3 kg), Approx. 100 Servings, Milk Chocolate, Domestically Produced

Verifyst Verifist 6.6 lbs (3 kg), Whey, Protein, 100% Berry Yogurt Flavor, Made in Japan, Large Capacity

Myprotein Impact Whey Protein, Natural Chocolate, 5.5 lbs (2.5 kg)

Gold Standard 100% Whey Protein, Vanilla Ice Cream, 5 lbs (2.27 kg) (Genuine US Manufacturer)

GronG Protein, Whey Protein, 2.2 lbs (1 kg), Standard Chocolate Flavor, Contains 11 Vitamins

VALX BALX Whey Protein, 2.2 lbs (1 kg), Whey Protein, Chocolate Flavor, Protein, WPC Chocolate, Diet, Supervised by Yoshinori Yamamoto, Made in Japan

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