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SiS Discount Codes

SiS Discount Codes & Vouchers

Save 40% in December 2024

SiS stands for Science in Sport, and that's what you get when you shop there. SiS offers a range of sports energy gels, hydration aids, supplements, vitamins and more. Each of these products has been subject to rigorous testing and is scientifically approved. You can benefit from savings on your next order when you use your SiS discount code.

SiS Savings: 40% off Orders

Tested on 30/11/2024

Get 34% off Everything at SiS

No expiry date

Receive 20% off Orders at SiS

Valid until tomorrow

Receive 15% off all Purchases at SiS

No expiry date

Receive 10% off Your Order at SiS

No expiry date

Receive 10% off at SiS

No expiry date

Receive 10% off Selected Orders at SiS

No expiry date

Save with 10% off with Newsletter Sign-Up

Valid until 31/12/2024

SiS Offer: £10 off with Friend Referral

Valid until 31/12/2024

Quick Savings! Use this Offer to get Free Delivery on Orders

Valid until 31/12/2024

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Give These Just-Expired SiS Voucher Codes & Deals a Go

Feel free to try one of these SiS discount codes that may still work.

Get 50% off SIS Protein Bars at SiS

Valid until 14/04/2020

SiS Voucher: 50% off Everything

Valid until 26/07/2016

SiS Voucher: 30% off Science in Sport Order

Valid until 31/08/2024

Get 10% off at SiS

Valid until 30/08/2024

SiS Voucher: 10% off Everything

Valid until 27/08/2024

Get 10% off at SiS

Valid until 18/08/2024

Get 10% off First Orders at SiS

Valid until 18/08/2024

SiS Promo Code: Take 10% off

Valid until 18/08/2024

Hydro Tablets starting from £8 at SiS

Valid until 26/07/2024

Immune Tablets for £8

Valid until 11/07/2024

Receive 10% off on Orders at SiS

Valid until 26/06/2024

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Bulk Discount Code: 45% off Everything

Valid until tomorrow

Receive 15% off Your Next Order at Myprotein

Valid until 06/12/2024

Receive 10% off Membership plus Free Joining Fee at The Gym Group

No expiry date

Get 10% off with Newsletter Sign Up at Adanola

Tested on 30/11/2024

Explore All Valid SiS Deals & Sales for December 2024

Discount

SiS Voucher Details

Expires

40%

SiS Savings: 40% off Orders

No expiry date

34%

Get 34% off Everything at SiS

No expiry date

20%

Receive 20% off Orders at SiS

04 December 2024

15%

Receive 15% off all Purchases at SiS

No expiry date

10%

Receive 10% off Your Order at SiS

No expiry date

10%

Receive 10% off at SiS

No expiry date

10%

Receive 10% off Selected Orders at SiS

No expiry date

10%

Save with 10% off with Newsletter Sign-Up

31 December 2024

£10

SiS Offer: £10 off with Friend Referral

31 December 2024

Deal

Quick Savings! Use this Offer to get Free Delivery on Orders

31 December 2024

Useful tips and information

SiS Voucher Codes

Does SiS offer a student discount?

Yes! SiS currently offers a student discount worth 20%. Claiming the exclusive student offer is quite simple. Create an account on the student platform UNiDAYS and verify that you are currently enrolled as a student. Upon successful verification, the promo code for students will be automatically sent to your inbox.

Is there a birthday discount?

On your birthday, you can currently receive up to 20% off the whole product range at SiS. Simply make sure that you've entered your birthdate correctly when registering an account. The SiS birthday code may be used for a purchase of your choice.

Using your discount code

Claiming and applying one of our SiS promo codes is quite simple. Browse our list of available SiS vouchers and copy the code that saves you the most to your clipboard. Pick the products you would like to purchase and head to the checkout. There, locate the designated promotional tab and paste your code into the input box. Activate your code by clicking on "Apply" and watch your bill drop immediately.

What do I do if I fail to redeem my SiS voucher code?

The price reduction of our SiS vouchers should be automatically discounted from the total. If that is not the case, consider following the steps below:

  • Check to ensure that you are using a SiS promo code that is meant for your customer group. For instance, if you have already placed an order you may not use first-order discounts.

  • Verify that you are applying a valid SiS code. If your code has already expired, select an alternative voucher code for your purchase.

  • Transfer the SiS discount code correctly, keeping in mind that our vouchers are case sensitive.

  • Some SiS voucher codes are tied to a minimum order requirement. Make sure to exceed the respective amount to receive the discount.

Are there any SiS offers for existing customers?

SiS offers various bundle deals as well as category discounts. With these, you easily save up to 40% on various sports products. Look around our Voucherbox website for attractive SiS discount codes and enter the code of your choice at the checkout to enjoy the price reduction.

Can I benefit from a SiS discount for new customers?

Yes! New customers currently have the opportunity to receive a gift for their first purchase. Simply place an order above £60 to get a free premium shaker. SiS regularly releases similar gift events. Keep an eye on our Voucherbox website to stay updated about current gift events.