Introduction

If you are concerned about your physique and looking for ways to boost your muscles and strengthen your body, you are at the right place. Here, we are introducing you to a protein supplement that can easily increase your protein intake and serve your purpose. It is none other than the best casein protein powder in Japan.

Just like whey protein, casein protein comes from milk protein. Casein comprises 80% of the total protein found in cow milk, while Whey consists of the remaining 20%. Casein is responsible for the whiteness of milk. 

The procedure to prepare the best casein protein powder in Japan is an elaborate one. Firstly, whey protein is strained to produce skimmed milk. The remaining curd-like milk substance is washed, drained, dried, and then grounded into casein protein powder. 

Certainly, numerous questions are arising in your mind. And all your answers lie in this thoroughly discussed article. So, give this a good read!

Casein Protein Powder in Japan

Our pick of the 6 best casein protein powders of 2024 in Japan

Zotezo Score
Best Casein Protein Powder
Lowest Price

B+

¥7,334.00

¥7,334.00

B+

¥9,990.00

¥9,990.00

B+

¥5,630.00

¥5,630.00

B

¥9,784.00

¥9,784.00

C+

¥4,680.00

¥4,680.00

C

¥3,326.00

¥3,326.00

Let's take a deep dive into these 6 best Casein Protein Powder in Japan

Best Overall Casein Protein Powder in Japan

#26214

B+

Zotezo review

The Ultimate Nutrition Natural Gainz Whey Protein Powder in Cookies N Cream flavor offers a delicious taste and a mix of different proteins, including whey, micellar casein, and milk protein, leading to potentially effective results. However, some users may find it expensive, and there could be concerns regarding its effectiveness.

Product details

  • Contains Whey Protein

  • Includes Micellar Casein

  • Contains Milk Protein

  • Flavor: Cookies N Cream

  • Weight: 3.6 Pounds

Benefits of Natural Gainz Whey Protein Powde...

  • Delicious taste

  • Effective results

  • Contains a mix of different proteins

Drawbacks

  • Expensive

  • Possible effectiveness concerns

B+

Zotezo review

The ON Gold Standard 100% Whey Protein in Double Rich Chocolate is a genuine product made in the United States and boasts a high protein content with essential amino acids. While some may find the taste too sweet, its mild sweetness and easy-to-drink consistency make it a popular choice among consumers. The only drawbacks are the lid packaging, which could be improved for better convenience.

Product details

  • Size: 20.3×20.3×27.4cm

  • Country of origin: United States

  • Net weight: 2.27kg

  • Genuine product: Ensure authenticity when sold and shipped by Amazon.co.jp

Benefits of ON Gold Standard Whey Protein 2....

  • High protein content

  • Contains essential amino acids (EAA)

  • Mild sweetness

  • Easy to drink

Weaknesses

  • Lid packaging could be improved

  • Some may find the taste too sweet

B+

Zotezo review

The Ultimate Nutrition Prostar Micellar and Hydrolyzed Casein Protein Powder in Chocolate flavor is a fat-free formula that effectively supports overnight muscle growth and facilitates recovery with BCAAs. While some users may find the texture slightly gritty, the product’s benefits make it a solid choice for those looking to enhance their muscle recovery and growth.

Product details

  • Micellar and Hydrolyzed Casein Protein

  • Fat-Free Formula

  • Supports Overnight Muscle Growth

  • Facilitates Recovery with BCAAs

  • 2 Pounds Packaging

  • Chocolate Flavor

Benefits of Prostar Micellar & Hydrolyze...

  • Supports overnight muscle growth

  • Facilitates recovery with BCAAs

  • Chocolate flavor option

Disadvantages

  • Some users may find the texture of the protein powder slightly gritty

  • The packaging design could be more user-friendly for scooping

B

Zotezo review

The BSN Syntha-6 Isolate Chocolate Milkshake 4.01 lbs offers a rich chocolate flavor, high protein content, and low fat, making it a desirable choice for those seeking a delicious and nutritious protein supplement. However, the large container size may pose a storage challenge, and the intense chocolate taste when mixed with milk may not suit everyone’s palate.

Product details

  • Manufacturer: BSN

  • Quantity: 4.01 lbs (1819g)

  • Protein content: 25g per 38g scoop

  • Low fat: 2g total fat, 0.5g saturated fat

  • Easy to consume: Mix one scoop with 200ml water or milk

  • Rich chocolate milkshake flavor

Benefits of BSN Syntha-6 Isolate Chocolate M...

  • Rich chocolate milkshake flavor

  • High protein content (25g per 38g scoop)

  • Low fat content (2g total fat, 0.5g saturated fat)

Negatives

  • Large container size may take up storage space

  • Intense chocolate flavor may be too rich for some when mixed with milk

株式会社ボディプラスインターナショナル

C+

Zotezo review

The Bulk Sports Protein Big Casein provides a time-release protein source that maintains high amino acid levels for 7-8 hours. However, the limited flavor options and higher price point might be drawbacks for some consumers.

Product details

  • Time-release protein for slow absorption

  • Maintains high amino acid levels in the blood for 7-8 hours

  • Pure cassein protein source without whey or soy

  • Suitable for consumption before bedtime or between meals

  • Includes spoon for convenient measuring

Benefits of Bulk Sports Big Casein Protein 1kg

  • Time-release protein for slow absorption

  • Maintains high amino acid levels in the blood for 7-8 hours

  • Pure casein protein source without whey or soy

Cons

  • Limited flavor options

  • Higher price point

Myprotein(マイプロテイン)

C

Zotezo review

The Myprotein Casein Micellar Powder (Chocolate, 1kg) offers a variety of delicious flavors, provides 24g of protein per serving, and features slow-absorbing protein. However, users should note that the packaging may differ from the advertisement, and some may find the powder slightly grainy despite thorough mixing.

Product details

  • Available in 4 delicious flavors

  • Contains 0.9 oz (24 g) of protein per serving

  • Slow-absorbing protein

Benefits of Myprotein Micellar Casein Powder

  • Available in 4 delicious flavors

  • Contains 0.9 oz (24 g) of protein per serving

  • Slow-absorbing protein

Drawbacks

  • Packaging may differ from what is advertised

  • Some users find the powder slightly grainy even when mixed well

Tips for choosing the right casein protein powders for you

Unlike fat, your body does not have a protein storage unit. As a result, to maintain better strength and shape, you will often require additional supplements to resist any deterioration in your muscle growth. The best casein protein powder in Japan enters the scene in such scenarios. 

However, selecting the best casein protein for your body may seem like a daunting task for a beginner like you, especially when a wide range of supplements is available in the online market. That is why we have listed all the things you must keep in mind before buying casein protein powder.

What is your training pattern?

Before scrolling through the various brands and companies selling Casein protein powder, you must ask this question yourself. Dwelling into scoops of protein powder will not promise you your desired results. You must consume it in a moderate quantity and work it out simultaneously. If you have no time for an extensive workout routine, consuming protein powder alone will not do the trick.

Do not get lured

While selecting Casein protein powder, you will be exposed to numerous ads and unrealistic claims. You must know that protein powder is not a magic drug that can give instant results. It is a supplement that supports your body to work out harder for better results. 

Therefore, beware of any fraudulent claims and stick to reputed and genuine products. We have already studied and listed a detailed list of products and their pros and cons to simplify your task.

Make sure you are lactose tolerant

If you are lactose intolerant, have kidney ailments, or disturb bowel health, then consumption of casein protein powder can induce all the uncomfortable symptoms. Therefore before buying a bulk quantity, check whether you are lactose intolerant or not.

Additional ingredients

You should also check whether your casein protein powder contains added sugar or flavors. The best casein protein powder in Japan does not contain any added lactose sugars, dextrins/maltodextrins, or artificial sweeteners. They might come in assorted flavors to give a flavorful yet healthy experience.

Choose bulks over shakes

Protein powders can burn a hole in your pocket, but they are effective. They can fulfill your goal, and you must stick to bulk buying instead of smaller ready-to-drink packets. These smaller packets might seem convenient but are costlier.

Products listed here are carefully reviewed and tested by our expert authors and reviewers. If you buy through links on this page, we may earn a small commission. Here’s our editorial process.

How we reviewed these products

Benefits of using casein protein powders

When it comes to milk protein, the quickly digested protein is Whey protein, whereas the slowly digested one is Casein. This slowly digested protein form is the best supplement one can invest in when it comes to muscle building. However, the best casein protein powder in Japan offers several other benefits.

Responsible for muscle recovery

Casein forms a gel lining in your stomach. The lining is responsible for providing a steady supply of all the amino acids, the building blocks of protein, that your body cannot make on its own. This supply of amino acids helps in muscle growth and recovery.

Controls mindless munching 

Many people tend to keep on munching snacks throughout the day. This mindless eating affects the body in various levels and ways. Intake of the best casein protein powder in Japan  will help you to control your appetite and allow you to delay your next meal. It will give you a feeling of fullness throughout the day.

Source of beneficial nutrients 

Casein protein powder is a good source of calcium and other nutrients. As a result, intake of this supplement helps in better bodily functions, strengthening of bones, and maintenance of vascular health. It also lowers blood pressure in some cases, suggests studies.

Helps in fat loss

Since it helps you control your small bouts of hunger throughout the day and gives you a sense of fullness, it directly restricts you from eating mindlessly and without cravings. As a result, your cravings for junk food and spicy flavors reduce gradually and result in fat loss if you start working out.

It helps in muscle build-up

We cannot reiterate the fact enough that Casein protein powder is the wisest choice if your goal is to gain muscle. The slow digestive property of the protein and slower absorption in the body helps in building bulky muscles. It is best to consume the best casein protein powder in Japan before working out. If you wish to gain muscles while sleeping, you can take it at night!

Side-effects of using Casein Protein Powder

There are no specific accounts of side effects from the consumption of Casein. However, many people are likely to be allergic to Casein protein, especially if they are lactose intolerant. The side effects in consumers can range from coughing, bloating, wheezing, itching skin, and swelling to diarrhea and hives.

The appropriate dosage of Casein protein powder depends on many factors ranging from age to health conditions. And since there are no relevant doses prescribed for it, except for the one mentioned on the label, you must consult your trainer, health professional, or nutritionist for the proper dosage.

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Frequently asked questions on casein protein powders

1. Can I take Casein Protein Powder if I am lactose intolerant?

2. Is Casein and Whey Protein the same?

3. Which is better: Casein or Whey Protein?

4. Does Casein Protein help in weight gain?

5. What are the side effects of using Casein Protein powder?

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Conclusion

In this article, we have more or less discussed everything there is to know about the best casein protein powder in Japan. Investing in one or the other on our list of hand-picked casein protein powders will be worth every penny. We have tried our best to answer all your queries regarding casein protein powders.

Did you find this article interesting? Were these products on your checklist as well? 

Do keep us posted in the comments below and share it with your friends, families, and loved ones. Also, don’t forget to mention the best casein protein powder in Japan that you pick up from the most reliable online marketplace.

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Dr. Heather Smith

MD, FRCP

Medical Practitioner verified

By day I’m a critical care physician and medical leader. By night I’m the mom of 2 chaotic, wonderful boys. Somewhere in the middle of all that, I’m building a skincare brand and trying to save the world from plastic waste.