Optimum Nutrition Gold Standard 100% Whey is undoubtedly the best whey protein for muscle gain. The formula stands out for its balanced protein blend, 5g of BCAAs, and Informed-Choice certification, ensuring quality and effectiveness. Its versatility and variety of flavours make it a reliable choice for all athletes.
Bolt Nutrition Whey Isolate delivers 28g of protein per serving without lactose and gluten. Enhanced with Phycocyanin, it supports lean muscle growth while offering anti-inflammatory benefits. Its high protein purity and complete amino acid profile cater to serious fitness enthusiasts.
MuscleTech Nitro-Tech combines 30g of protein with added creatine monohydrate to maximise muscle gains and strength. Its powerful blend of whey isolate and peptides ensure rapid absorption, making this muscle-building supplement ideal for those seeking significant muscle and weight gain.
This table compares the best whey proteins in terms of key metrics like grams of protein per serving, added sugar, calories, other ingredients, etc., to help you make an informed decision.
This table compares the best high-protein powder options recommended by us in terms of their price range and customer ratings
Flavour: Chocolate Smooth
Net Quantity: 2.5 kg (5.5 lbs)
Protein Serving: 23g per scoop
Diet Type: Vegetarian
Material Type Free: Gluten Free
High protein content (over 90%) with low fat and carbs
Excellent source of BCAAs (including Leucine) for muscle growth and repair
Fast-absorbing for optimal post-workout recovery
Available in a wide variety of flavours
Vegetarian-friendly
Some users experience bloating and digestive discomfort
"MyProtein Impact Whey Isolate stands out for its impressive protein purity and BCAA content. It's a solid choice for athletes seeking a fast-absorbing protein source to support muscle building and recovery."
A high-quality whey isolate powder with a clean protein profile
"I've noticed a difference in my recovery time after weightlifting sessions, after using MyProtein Impact Whey Isolate. The chocolate smooth flavour mixes well with water or milk, and the quality and effectiveness make it worth it for me."
Flavour: Milk Chocolate
Net Quantity: 1.81kg (4lbs)
Protein Serving: 30g per scoop
Diet Type: Non-Vegetarian
Material Type Free: Gluten Free
Powerful protein blend with whey isolate and peptides for rapid absorption
Added creatine monohydrate (3g) to support muscle growth and strength gains
Fortified with BCAAs and glutamine for enhanced muscle recovery
Available in delicious flavours
It contains soy and may not be suitable for those with soy allergies
"MuscleTech Nitro-Tech packs a punch with its protein blend and added creatine. This formula is designed for serious athletes seeking maximum muscle-building results."
A high-performance whey protein formula with creatine for advanced muscle-building
"I've been using MuscleTech Nitro-Tech for a while now and I've noticed a difference in my workouts. The combination of protein, creatine, and BCAAs helps me push harder and recover faster.
Flavour: Dutch Chocolate
Net Quantity: 1 kg (2.20 lbs)
Protein Serving: 25g per scoop
Diet Type: Vegetarian
Material Type Free: Lactose-Free, Gluten-Free
100% whey protein isolate for high protein purity with low carbs and fat
Fortified with vitamins and minerals (A, C, E & Zinc) to support immune health
Added biotin for healthy hair, skin, and nails
Zero-added sugar and lactose-free for better digestion
Low-quality packaging seal
"Isopure Whey Protein Isolate Powder ranks high as the best whey protein for muscle gain on our list because of its focus on protein purity and added micronutrients. This option is suited for athletes or individuals seeking a lactose-free protein source with immune and beauty benefits."
A high-quality whey protein isolate with a clean ingredient profile
"I switched to Isopure Whey Protein Isolate because I was looking for a lactose-free protein powder that wouldn't upset my stomach. The Dutch chocolate flavour is delicious and mixes well with water or almond milk."
Flavour: Double Rich Chocolate
Net Quantity: 899g
Protein Serving: 24g per scoop
Diet Type: Vegetarian
Material Type Free: Gluten-Free
Popular blend of whey protein isolate, concentrate, and peptides for varied absorption rates
5 grams of naturally occurring BCAAs per serving to support muscle-building
Mixes easily and is available in a variety of delicious flavours
Informed-Choice certified for banned substance testing
It contains sucralose, an artificial sweetener
The packaging seal could have been better
"Optimum Nutrition's Gold Standard 100% Whey is a well-established protein powder for a reason. The combination of protein sources and different flavours makes it a versatile option for many athletes."
A well-regarded whey protein powder with a classic blend for muscle support
"I've been using Optimum Nutrition Gold Standard Whey for years now, and it's always been my go-to protein powder. It keeps me feeling full in between meals, and I've noticed a difference in my muscle recovery after workouts."
Flavour: Chocolate Brownie
Net Quantity: 1 kg (2.2 lbs)
Protein Serving: 20g per scoop
Diet Type: Vegetarian
Material Type Free: Not recommended for those with dairy allergies (contains milk)
Affordable whey protein concentrate with a high protein content (over 80% per serving)
Contains BCAAs, including leucine, to support muscle growth and repair
Available in a wide range of flavours
Lactose content present
Some reviewers report issues with mixability
"Myprotein Impact Whey Protein is a budget-friendly option with a high protein content. While it might not be the most premium or easiest-mixing protein powder, it offers good value for cost-conscious athletes. However, those with lactose sensitivities may want to consider an isolated version."
An affordable whey protein concentrate to supplement your protein intake
"I started using Myprotein Impact Whey Protein to add more protein to my diet. It is a decent protein powder option that keeps me feeling fuller for longer throughout the day and helps with muscle recovery."
Flavour: Chocolate Fudge
Net Quantity: 2 lbs (907g)
Protein Serving: 24g per scoop
Diet Type: Vegetarian
Material Type Free: Zero Added Sugar
100% whey protein blend with a mix of isolate and concentrate for varied absorption rates
5.5g BCAAs per serving to support muscle growth and recovery
Enhanced with digestive enzymes for easier digestion and reduced bloating
Delicious flavour options and zero added sugar
Occasional issues with the packaging seal
"GNC Pro Performance 100% Whey Protein Powder offers a solid protein blend with digestive enzymes for a user-friendly experience. The variety of flavours and zero added sugar to cater to those seeking a tasty and health-conscious protein supplement."
A well-rounded whey protein blend with a focus on digestion and taste
"I've been using GNC Pro Performance Whey Protein for a while now, and I like the chocolate fudge flavour. It mixes well with water or milk and doesn't cause any stomach upset, thanks to the digestive enzymes. It keeps me feeling full in between meals, and I've noticed a difference in muscle recovery after my workouts."
Flavour: Rich Chocolate
Net Quantity: 1 kg (2.2 lbs)
Protein Serving: 25g per scoop
Diet Type: Vegetarian
Clinically tested formula with enhanced absorption claims (50% higher protein absorption and 60% higher BCAA absorption)
Rigorously tested and certified for safety and quality
Unique enzyme blend (MB EnzymePro) to aid digestion and minimise protein digestion issues
Delicious flavour options and a convenient "scoop on top" packaging feature
Some users report mixed experiences with digestion
"MuscleBlaze Biozyme Performance Whey Protein stands out for its focus on clinically tested protein absorption and rigorous third-party certifications. The unique enzyme blend and convenient packaging are appealing features."
A whey protein powder with a scientifically backed formula for enhanced absorption
"I've been using MuscleBlaze Biozyme Whey Protein for a few months now, and I've noticed a difference in my muscle recovery after workouts. I appreciate that the protein is clinically tested and backed by certifications, which gives me peace of mind."
Flavour: Piedmont Chocolate
Net Quantity: 2 lbs (907g)
Protein Serving: 28g per scoop
Diet Type: Vegetarian
Material Type Free: Gluten-Free, Lactose-Free
100% whey protein isolate with a high protein content (28g per serving) for lean muscle building and recovery
Formulated in the USA with a complete amino acid profile (including 7g BCAAs and 14g EAAs)
Unique addition of Phycocyanin, a superfood with anti-inflammatory and antioxidant properties
Low-carb and fat content suitable for various dietary needs
Easy mixing and delicious flavour options
Container shape should be improved
"Bolt Nutrition Whey Isolate Protein Powder boasts a unique combination of whey isolate and Phycocyanin, a superfood with potential health benefits. The high protein content, complete amino acid profile, and low-carb content cater to athletes and fitness enthusiasts.”
A whey protein isolate powder with a high protein content for muscle support - along with no lactose or gluten
"I've been using Bolt Whey Isolate Protein for a while now, and I'm impressed with the quality and taste. The Piedmont chocolate flavour is delicious and mixes smoothly with water or milk. I feel like I recover faster after my workouts, and I appreciate that it's gluten-free and lactose-free since I have some sensitivities."
Flavour: Double Rich Chocolate
Net Quantity: 1 kg (2.2 lbs)
Protein Serving: 27g per scoop
Diet Type: Vegetarian
Material Type Free: Gluten-free
Combines whey protein concentrate and isolate for a blend of fast and slow-digesting protein
High in BCAAs (5.7g per serving) to support muscle growth and recovery
Digestive enzymes are included to aid protein absorption and potentially reduce digestive discomfort
USA Labdoor Certified for protein content and purity
Some users report issues with mixability and experience bloating or other digestive discomfort
"As-It-Is Nutrition Atom Whey Protein offers a blend of whey concentrate and isolate for a price-conscious option. The inclusion of digestive enzymes and Labrador certification are positive aspects."
A protein powder with a high BCAA content to support muscle-building
"I started using AS-IT-IS Atom Whey Protein to add more protein to my diet. The double-rich chocolate flavour is decent, but it can be a little clumpy when mixed with water. Overall, it's a good value for the price."
Flavour: Unflavoured
Net Quantity: 1 kg (2.2 lbs)
Protein Serving: 26g per scoop
Diet Type: Vegetarian
Material Type Free: No artificial ingredients (sweeteners, flavours, colours), preservatives, gums, thickeners, or anti-caking agents
Clean, unflavoured whey protein concentrate for complete control over taste and customisation
High protein content (26g per scoop) with a good amount of BCAAs (6.4g) to support muscle growth and recovery
Transparent and traceable sourcing with a focus on purity (tested by independent labs)
Easy-to-digest formula with bromelain enzyme and sunflower lecithin for better mixability
None so far
"The Whole Truth Whey Protein Concentrate prioritises purity and clean ingredients. The unflavoured option allows for complete control over taste, and the protein content is impressive."
A high-quality, unflavoured whey protein concentrate for maximum control over taste
"I'm a big fan of The Whole Truth Whey Protein Concentrate. It mixes well and is easy to digest. I appreciate that the company prioritises purity and gets its products tested by independent labs. It gives me peace of mind knowing exactly what I'm putting in my body."
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The optimal amount of protein for muscle gain depends on several factors, including body weight, activity level, and fitness goals. However, here's a general idea to help you determine your ideal daily protein intake:
1. General Recommendation
The Academy of Nutrition and Dietetics recommends a daily intake of 0.8 grams of protein per kilogram of body weight for healthy adults. This is the minimum recommended amount to maximise muscle protein synthesis and maintain basic bodily functions.
2. Muscle Building
For active individuals focused on muscle building, the recommended intake increases to 1.2-2.0 grams of protein per kilogram of body weight per day. This range provides the body with the necessary building blocks to repair and grow muscle tissue after exercise.
3. Advanced Athletes
Elite athletes or individuals undergoing intense training programs may require even higher protein intakes, potentially reaching up to 2.5 grams of protein per kilogram of body weight daily. However, consulting a registered dietitian or sports nutritionist is recommended for personalised guidance.
Remember: These are just guidelines. Consulting a registered dietitian or nutritionist can help you determine the optimal protein intake for your specific needs and goals. They can also consider factors like individual health conditions and dietary restrictions.
Whey protein is generally considered safe for most healthy adults when consumed in moderate doses. However, some potential side effects can occur, especially if consumed in excess quantities.
Digestive Issues: Lactose intolerance is a common concern, as whey protein is derived from milk. Symptoms like bloating, gas, and diarrhoea can arise if you have lactose intolerance. Opting for whey isolate or hydrolysed whey protein varieties can minimise this issue, as they contain less lactose.
Kidney Strain: While uncommon for healthy individuals, very high protein intake (far exceeding recommended amounts) can put stress on your kidneys. If you have pre-existing kidney concerns, consult a doctor before using whey protein supplements.
Weight Gain: Whey protein is a calorie source. While protein is essential for muscle building, consuming excessive protein alongside a high-calorie diet can lead to unwanted weight gain. Be mindful of your overall calorie intake and adjust your diet accordingly.
Gout: Whey protein contains purines, which are broken down by the body into uric acid. For individuals prone to gout, high-protein powder protein intake could trigger gout attacks. It's best to consult with a healthcare professional if you have a history of gout.
Other Potential Side Effects: Less common side effects may include headaches, fatigue, and nausea. These are typically associated with high intake or individual sensitivities.
To support muscle growth and recovery and optimise your fitness journey, it's important to understand your protein needs, select the appropriate muscle-building supplement for your goals, and consume it responsibly. That being said, we hope you found this guide useful!
Here are our answers to some of the most frequently asked questions about using protein for muscle growth:
There are three main types of whey protein: concentrate, isolate, and hydrolysate. Whey isolate is best for muscle gain due to its higher protein content (often exceeding 90%) per serving. Whey concentrate has a lower protein content (around 70-80%) but may be slightly more affordable and still offers benefits for muscle building. Hydrolysate is pre-digested whey protein, making it absorb even faster.
Post-workout is a popular window for taking whey protein as your muscles are primed for protein synthesis to repair and rebuild after exercise. However, you should consume it within 30-60 minutes after your workout.
Whey protein is known for its rapid absorption rate, making it ideal for post-workout recovery. Casein protein digests slower, providing a sustained release of amino acids, beneficial for overnight muscle recovery. Plant-based proteins can also be effective for muscle gain but often require combining various plant sources to achieve a complete amino acid profile.
Whey protein is generally safe for healthy adults. However, it's recommended to consult a paediatrician before giving whey protein to children or teenagers, as their protein needs differ.
Studies suggest whey protein is safe for long-term use in moderate amounts for most healthy adults. However, if you have pre-existing kidney conditions, consult a doctor before using whey protein regularly. It's always wise to maintain a balanced diet alongside whey protein for optimal health.
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