Optimum Nutrition Gold Standard 100% Casein (1.8kg)

Price Save £22.04

Tax included.

[{"id":45027599974621,"title":"Creamy Vanilla","option1":"Creamy Vanilla","option2":null,"option3":null,"sku":"P8270S","requires_shipping":true,"taxable":true,"featured_image":{"id":40924654633181,"product_id":8531351699677,"position":1,"created_at":"2024-04-22T14:44:05+01:00","updated_at":"2024-04-22T14:44:07+01:00","alt":null,"width":600,"height":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein1.png?v=1713793447","variant_ids":[45027599974621]},"available":true,"name":"Optimum Nutrition Gold Standard 100% Casein (1.8kg) - Creamy Vanilla","public_title":"Creamy Vanilla","options":["Creamy Vanilla"],"price":5595,"weight":1800,"compare_at_price":7799,"inventory_management":"shopify","barcode":"5060469989853","featured_media":{"alt":null,"id":33588701954269,"position":1,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein1.png?v=1713793447"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45027600007389,"title":"Chocolate","option1":"Chocolate","option2":null,"option3":null,"sku":"P8271S","requires_shipping":true,"taxable":true,"featured_image":{"id":40924654698717,"product_id":8531351699677,"position":2,"created_at":"2024-04-22T14:44:05+01:00","updated_at":"2024-04-22T14:44:07+01:00","alt":null,"width":600,"height":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein2.png?v=1713793447","variant_ids":[45027600007389]},"available":true,"name":"Optimum Nutrition Gold Standard 100% Casein (1.8kg) - Chocolate","public_title":"Chocolate","options":["Chocolate"],"price":5595,"weight":1800,"compare_at_price":7799,"inventory_management":"shopify","barcode":"5060469989846","featured_media":{"alt":null,"id":33588701987037,"position":2,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein2.png?v=1713793447"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45027600040157,"title":"Strawberry","option1":"Strawberry","option2":null,"option3":null,"sku":"P8272S","requires_shipping":true,"taxable":true,"featured_image":{"id":40924654567645,"product_id":8531351699677,"position":3,"created_at":"2024-04-22T14:44:05+01:00","updated_at":"2024-04-22T14:44:07+01:00","alt":null,"width":600,"height":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein3.png?v=1713793447","variant_ids":[45027600040157]},"available":true,"name":"Optimum Nutrition Gold Standard 100% Casein (1.8kg) - Strawberry","public_title":"Strawberry","options":["Strawberry"],"price":5595,"weight":1800,"compare_at_price":7799,"inventory_management":"shopify","barcode":"5060751990741","featured_media":{"alt":null,"id":33588702019805,"position":3,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/nisupplements.com\/cdn\/shop\/files\/casein3.png?v=1713793447"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]

Low stock - 4 items left
Inventory on the way

Bundle

Saving

Price

Select

ONGS CASEIN-chocolate

I forgot to mention… the price for this product through NIsupplements was brilliant, I bought extra and an unflavoured Whey as well !!

Excellent Service

Second time ordering from these guys.

The product itself is ideal, and really helps me get a good sleep.
Delivered quick time and have recommended NI Supplements to friends. I'll be ordering again in the future.

Really good quality casein

This is my favourite supplent, such an easy and tasty way to get some extra grams of protein before bed. It mixes so well and leaves you feeling comfortably full.

Awesome product ... great price

Awesome product.... Great service from NI supplement really happy and satisfied the way handle customer service will recommend to buy the product.... trustworthy

Great taste

This is my favourite shake before bed, great taste. Quick delivery from NI too - excellent service!

Need help? Email or DM us on @nisupplements

Returns available

Greenspark registered earth positive business

Secure payments

Gold Standard 100% Casein™ is a slow digesting protein that supports muscle growth and repair while you sleep. Each serving is packed with 24g of protein which provides a prolonged supply of amino acids overnight. SUPPORT MUSCLE GROWTH AND REPAIR OVERNIGHT. From runners to rugby players and tennis players to triathletes, whenever any type of athlete trains or competes their muscles need preparing and repairing to put them in the best shape next time out.

Casein is best enjoyed in the evening.Enjoy before bed to support muscle growth while you rest. Suitable for vegetarians.

Description

Ready to mix casein protein powder with sweeteners. Suitable for vegetarians.

Delivery Terms & Conditions / Options & Info

Name: Optimum Nutrition Gold Standard 100% Casein (1.8kg)
Brand: Optimum Nutrition
SKU: P8270S
Price: 55.95 GBP
Availability: InStock

Operated by Nutrition & Internet Supplements Limited (trading as NI Supplements). Last updated: 13 October 2025

Cut-off & processing: Orders placed before 1 p.m. (UK time) are processed the same working day. Courier networks operate Monday–Saturday (excluding Bank Holidays). Delivery times below exclude Sundays unless stated.

UK Mainland (excluding Highlands & Islands)

Orders under £50

Service	Price	Speed	Notes
1–2 Day Delivery (No Signature Required)	£2.95	Fully tracked; 91% delivered next day if ordered before 1 p.m. (excl. Sundays)	Photographic & GPS delivery proof confirms delivery. Non-delivery claims are investigated; parcels confirmed delivered by Royal Mail are not eligible for replacement.
1–2 Day Delivery (Signature Required)	£3.35	Fully tracked; 91% delivered next day if ordered before 1 p.m. (excl. Sundays)	Signature required at delivery.

FREE delivery on orders over £50

Service	Price	Speed	Notes
4–5 Day Delivery (No Signature Required)	Free	Fully tracked (excl. Sundays)	Terms for “No Signature Required” (photo/GPS proof) apply.
4–5 Day Delivery (Signature Required)	Free	Fully tracked (excl. Sundays)	Signature required.

Reminder: Selecting “No Signature Required” means your parcel may be left at your address or a designated safe location without a signature, with photo/GPS proof used to confirm delivery.

Northern Ireland

Service	Price	Speed	Notes
Free Delivery on Orders Over £50	Free	2–3 working days	Fully tracked.
Express (No Signature Required)	£1.99	Next-day if ordered before 1 p.m. (excl. Sundays)	Photo/GPS proof confirms delivery.
Express (Signature Required)	£2.49	Next-day if ordered before 1 p.m. (excl. Sundays)	Signature on delivery required.

Note: We guarantee same-day dispatch for express items ordered before 1 p.m.; courier delays can occasionally occur.

Ireland

Service	Price	Speed	Notes
Free Delivery on Orders Over £70	Free	2–4 working days	Fully tracked; order before 1 p.m. (excl. weekends)
Reduced Rate on Orders Over £50	£2.99	1–2 working days	Parcelforce/GLS; fully tracked (excl. weekends)
Express on Orders Under £50	£4.99	Next-day if ordered before 1 p.m.	Fully tracked; Mon–Fri dispatch; courier delays may occur
Standard on Orders Under £50	£4.99	1–2 working days	Parcelforce/GLS; fully tracked

EU & International Shipping

All international shipping rates are shown at checkout.

Customs notice: If your parcel is held or delayed by customs, neither NI Supplements nor the courier can obtain more detail than the status shown on your tracking. Customs operate independently and, following Brexit, occasional delays are unavoidable. These delays are outside our stated delivery times and are not our responsibility. We cannot contact customs to expedite orders.

Agreement: By completing your order and ticking the checkout box, you agree to these delivery terms for EU/international shipments.

UK Mainland (excluding Highlands & Islands)

Orders under £50

Service	Price	Speed	Notes
1–2 Day (No Signature)	£2.95	Tracked; 91% next-day before 1 p.m.	Photo/GPS proof confirms delivery; confirmed deliveries not eligible for replacement.
1–2 Day (Signature)	£3.35	Tracked; 91% next-day before 1 p.m.	Signature required.

FREE on £50+

Service	Price	Speed	Notes
4–5 Day (No Signature)	Free	Tracked	Photo/GPS proof terms apply.
4–5 Day (Signature)	Free	Tracked	Signature required.

Northern Ireland

Service	Price	Speed	Notes
Free on £50+	Free	2–3 working days	Tracked
Express (No Signature)	£1.99	Next-day before 1 p.m.	Photo/GPS proof
Express (Signature)	£2.49	Next-day before 1 p.m.	Signature required

Ireland

Service	Price	Speed	Notes
Free on £70+	Free	2–4 working days	Tracked; order before 1 p.m.
Reduced Rate on £50+	£2.99	1–2 working days	Parcelforce/GLS; tracked
Express under £50	£4.99	Next-day before 1 p.m.	Tracked; Mon–Fri dispatch
Standard under £50	£4.99	1–2 working days	Parcelforce/GLS; tracked

EU & International

Rates shown at checkout.

Customs: Customs delays are outside our delivery times and not our responsibility; we cannot contact customs to expedite.

General Delivery Terms

No Signature Required: By selecting this option you agree your parcel may be left at the delivery address or a designated safe location without a signature. Photographic and GPS proof from the courier confirms delivery. Claims of non-delivery will be investigated, but parcels confirmed delivered are not eligible for replacement.
Signature Required: A signature will be obtained at delivery; choose this for added security.
Same-day dispatch (express): Guaranteed for orders placed before 1 p.m. Courier delays can occasionally occur.
Working days: Processing Mon–Sat (excl. Bank Holidays). Deliveries do not include Sundays unless stated by the service.
Cut-off: Orders after 1 p.m. are processed the next working day.

Failed Delivery & Returns to Sender

If an order is returned due to customer error (e.g., failure to take delivery or arrange collection/redelivery), a re-shipping fee applies. Alternatively, a refund of the item price minus our shipping costs can be provided. If the error is ours, we will re-ship at our expense.

Questions about shipping?

For queries on shipping times and order status please email hello@nisupplements.com.

Nutrition & Internet Supplements Limited (trading as NI Supplements)
Unit 5, Graham Industrial Park, Dargan Crescent, Belfast, Co Antrim, BT3 9LP, United Kingdom