Click And Collect Available In Our Greystones Store. We are now only using DPD as our courier, to guarantee minimal delays in getting your orders to you before Christmas.

Your shopping cart is empty!

+
Brands
BSN
Discount Supplements
FULFIL
Kinetica
NutButters
Olimp Nutrition
Optimum Nutrition
PhD Nutrition
Quest Nutrition
Reflex Nutrition
Supreme Nutrition
View Our Brands

View All Brands
+
Goals
Dietary Needs

Dairy Free

Gluten Free

Organic

Vegan

Vegetarian

View More
Improve Health
Muscle & Size
Power & Strength
Sports Performance
Weight Loss
Women's Fitness
+
Protein
All in One Protein
Beef Protein
Blended Protein
Casein Protein
Collagen Protein
Dairy Free Protein
Diet Protein
Egg Protein
Gluten Free Protein
Mars Hi-Protein Bars
Milk Protein
Natural Protein
Paleo Protein
Protein Bars
Protein Powders
Protein Samples
Protein Shakes
Ready to Drink Protein
Slow Release Protein
Unflavored Protein
Vegan Protein
Vegetarian Protein
Whey Isolate
Whey Protein
Lean Protein
+
Sports Nutrition
Amino Acids

Arginine

BCAA's

Beta Alanine

Essential Amino Acids

Glutamine

HMB

View More
Carbohydrates

Carbohydrate Powders

Fast Release Carbohydrates

Oats

Slow Release Carbohydrates
Creatine

Creapure

Creatine Blends

Creatine Capsules

Creatine Ethyl Ester

Creatine Monohydrate

Creatine Powders

View More
Endurance

Electrolytes

Energy Bars

Energy Drinks

Energy Gels

Hydration
Intra-Workout

Intra-Workout Aminos

Intra-Workout Carbs
Post-Workout

Amino Acid Powders

Amino Acid Tablets

Protein Drinks

ZMA
Pre-Workout

BCAA Drinks

Caffeine

Caffeine free

Mental Focus

Nitric Oxide

Pre-Workout Shakes

View More
Recovery Drink
Test Boosters
Vitamins & Minerals
Weight Gainers

High Calorie Gainer

Lean Gainer
+
Weight Loss
Appetite Suppressant
CLA
Detox
Diet Bars
Diet Protein
Diet Shakes
Diuretics
Fat Burners
Green Tea Supplements
Healthy Fats
High Protein Bars
Keto Supplements
L-Carnitine
Low calorie foods
Meal replacement shakes
Slimming Tablets
Stimulant Free
Thyroid supplements
+
Well-Being
Adaptogens
Antioxidants
Blood Sugar Support
Bone Health
Brain Function

Chromium

Cognitive Enhancing

Nootropics (Cognitive Enhancers)
Gut Health

Digestive Enzymes

Fibre

Probiotics

Super Greens

View More
Hair, Skin & Nails

Hair Growth
Heart Health

CoQ10

Essential Fatty Acids

Garlic

High Blood Pressure

View More
Immune Support
Joint Support

Arthritis

Glucosamine

Omega 3 Fish Oils

Turmeric

View More
Kids Health
Liver Support
Mens Health

Hair Loss

Testosterone
Minerals

Calcium

Chromium

Iron

Magnesium

View More
Multivitamins
Sexual Health
Sleep & Relaxation

Sleep Aid
Stress & Anxiety
Vitamins

Vitamin A

Vitamin B

Vitamin C

Vitamin D

View More
Womens Health

Menopause

Menstruation

Prenatal

Vitamins

View More
Remedies

Anti-Aging

Anti-Cancer

Colds & Flu

Cortisol Support

View More
+
Food & Drink
Apple Cider Vinegar
Baking & Cooking

Flour

High Protein Pancakes

Liquid Egg Whites
Coffee

Bulletproof Coffee
Healthy Teas

Green Tea

Hemp Tea

Herbal Tea

Matcha Tea

Slimming Tea

View More
Nut Butters

Almond Butter

Cashew Butter

Flavoured Nut Butters

Peanut Butter
Nuts & Seeds

Almonds

Brazil Nuts

Cashews

Flaxseed
Oats, Pulses, Grains etc
Protein Wraps
Salts

Epsom Salts

Himalayan salts
Sauces, Syrups & Flavour Drops

Low Calorie Flavour Drops

Low Calorie Sauces

Low Calorie Syrups
Snacks

Beef Jerky

Meal Replacement Bars

Protein Balls

Protein Brownies

Protein Cookies

View More
Superfoods
Sweeteners
+
Accessories
Clothing

Mens Workout Clothing

Womens Workout Clothing
Essential Oils
Fitness Trackers
Gym Accessories

Gloves & Grips

Gym Bags

Gym Towels

Home Gym

Resistance Bands

View More
Home Fitness Equipment
Natural Cleaning Products

Hand Sanitiser
Personal Protective Equipment
Tanning

Self Tanning Sprays

Tanning Mousse

Tanning Oil

Tanning Supplements

Tanning Tablets

View More
Weightlifting

Belts

Liquid Chalk

Straps
Wireless Earphones
Boxing/ MMA Gear
Personal Care

Charcoal

Dental Care

Deodorant

Mens Moisturizer

Organic

View More
+
Offers
Irish Brands
New Products
Special Offers

Accessories

Amino Acids

Creatine

Energy & Recovery

Food & Drink

View More
Staff Picks
Clearance Sale

Amino Acids

Clothing

Health Foods/Clearance Sale

Healthy Fats

Pre-Workouts

View More
View Bestsellers
+
Blog +

Cashew Butter
Christmas Offers
Coconut Flour
Collagen Protein
Discount Supplements Whey
Epsom salts
Flash Friday
Go Health Nutrition
Halloween
Super Sunday 22nd November - Further 10% Off Today Only
Winter Vitamins
Wireless Earphones
Protein
- All in One Protein
- Beef Protein
- Blended Protein
- Casein Protein
- Collagen Protein
- Dairy Free Protein
- Diet Protein
- Egg Protein
- Gluten Free Protein
- Mars Hi-Protein Bars
- Milk Protein
- Natural Protein
- Paleo Protein
- Protein Bars
- Protein Powders
- Protein Samples
- Protein Shakes
- Ready to Drink Protein
- Slow Release Protein
- Unflavored Protein
- Vegan Protein
- Vegetarian Protein
- Whey Isolate
- Whey Protein
- Lean Protein
Sports Nutrition
Goals
Weight Loss
Wellbeing
Food & Drink
Accessories
Special Offers

Reset Filters

Shop by Brand

Optimum Nutrition
USN

Availability

In Stock
Out of Stock

Slow Release Protein

Optimum Nutrition 100% Casein Protein 1.8kg

Add to Wish List

Compare this Product

Optimum Nutrition 100% Casein Protein 1.8kg

Optimum Nutrition 100% Casein Protein Optimum Nutrition Casein Protein delivers 24 g of slower di..

€59.99

Ex Tax: €52.85

Add to Cart

Optimum Nutrition 100% Casein Protein 908g

Optimum Nutrition 100% Casein Protein Optimum Nutrition Casein Protein delivers 24 g of slower di..

€36.99

Ex Tax: €32.59

Add to Cart

USN Casein Protein 908g

USN Casein Protein 908gUSN Casein Night Time Protein is a gradual-release micellar casein with added..

€29.99

Ex Tax: €26.42

Add to Cart

Add to Wish List

Compare this Product

Showing 1 to 3 of 3 (1 Pages)

GIFT VOUCHERS AVAILABLE - The perfect gift for any occassion

Buy Now

Slow Release Protein

GIFT VOUCHERS AVAILABLE - The perfect gift for any occassion

Keep up to date with the latest news & offers