SiS Promo Codes With our “Best Coupon Promise” you can be sure to have found the best* vouchers available!


All Active SiS Voucher Codes & Discount Codes - Up To 50% off in April 2020

SiS, or Science in Sport, is a sports nutrition company that manufactures and supplies nutrients, and sports supplements. At the 2012 Olympics, 24 medal-winning athletes or teams used SiS products and the company is the sports nutrition supplier for major teams and professional athletes in cycling, athletics, rowing, and many other disciplines. Use one of our SiS voucher codes for discounted performance products today.

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50% Exclusive

Take 50% off SIS Protein Bars at SiS


Valid until further notice

Terms & Conditions
Discount: 50% off
Valid for: New and existing customers
Discount Type: Voucher
Minimum Order Value: No
Expiry Date: Valid until further notice
Statistics: Used 1755 times
Details:

Applies to 12 packs only. Sopme other exclusiona apply.

Last Changed: on 29-03-2020 at 12:03 am
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20% Voucher

Grab 20% off at SiS


Valid until further notice

Terms & Conditions
Discount: 20% off
Valid for: New and existing customers
Discount Type: Voucher
Minimum Order Value: £30
Expiry Date: Valid until further notice
Statistics: Used 1136 times
Details:

Some exclusions apply.

Last Changed: on 30-03-2020 at 01:14 am
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10% Voucher

Grab 10% off Everything at SiS


Valid until further notice

Terms & Conditions
Discount: 10% off
Valid for: New and existing customers
Discount Type: Voucher
Minimum Order Value: No
Expiry Date: Valid until further notice
Statistics: Used 139 times
Details:

Some exclusions apply.

Last Changed: on 22-03-2020 at 12:18 am
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50% Deal

50% off Energy Range at SiS


Valid until further notice

Show Deal
Terms & Conditions
Discount: 50% off
Valid for: New and existing customers
Discount Type: Deal
Minimum Order Value: No
Expiry Date: Valid until further notice
Statistics: Used 33 times
Details:

Valid only on items featured on the promotional page. 

Last Changed: on 26-03-2020 at 01:29 am
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60% Deal

Up to 60% off in the Clearance Sale at SiS


Valid until further notice

Show Deal
Terms & Conditions
Discount: 60% off
Valid for: New and existing customers
Discount Type: Deal
Minimum Order Value: No
Expiry Date: Valid until further notice
Statistics: Used 11 times
Details:

Valid only on items featured on the promotional page. 

Last Changed: on 23-03-2020 at 11:47 pm
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      30 Day Statistics: 1 new Voucher Codes added • 20 tested by hand • Last edit on 05-04-2020

      Recently Expired SiS Discount Codes & Promo Codes

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

      50% Voucher

      Take 50% off at SiS


      Terms & Conditions
      Discount: 50% off
      Valid for: New and existing customers
      Discount Type: Voucher
      Minimum Order Value: No
      Expiry Date: Valid until further notice
      Statistics: Used 0 times
      Last Changed: on 23-08-2018 at 01:56 pm
      50% Voucher

      50% off at SiS


      Terms & Conditions
      Discount: 50% off
      Valid for: New and existing customers
      Discount Type: Voucher
      Minimum Order Value: No
      Expiry Date: 29-08-2016
      Statistics: Used 0 times
      Last Changed: on 10-07-2018 at 11:50 am
      40% Deal

      Up to 40% off Bars at SiS


      Show Deal
      Terms & Conditions
      Discount: 40% off
      Valid for: New and existing customers
      Discount Type: Deal
      Minimum Order Value: No
      Expiry Date: 09-02-2020
      Statistics: Used 0 times
      Details:

      Valid only on items featured on the promotional page. 

      Last Changed: on 10-02-2020 at 04:46 am
      45% Deal

      Activate this Offer for 45% off Bundles at SiS


      Show Deal
      Terms & Conditions
      Discount: 45% off
      Valid for: New and existing customers
      Discount Type: Deal
      Minimum Order Value: No
      Expiry Date: 02-02-2020
      Statistics: Used 0 times
      Details:

      Valid only on items featured on the promotional page. 

      Last Changed: on 04-02-2020 at 09:20 am
      20% Voucher

      20% off at SiS


      Terms & Conditions
      Discount: 20% off
      Valid for: New and existing customers
      Discount Type: Voucher
      Minimum Order Value: No
      Expiry Date: 02-02-2020
      Statistics: Used 66 times
      Details:

      Some exclusions apply.

      Last Changed: on 03-02-2020 at 03:31 am
      40% Deal

      Activate this Offer for 40% off Everything at SiS


      Show Deal
      Terms & Conditions
      Discount: 40% off
      Valid for: New and existing customers
      Discount Type: Deal
      Minimum Order Value: No
      Expiry Date: 26-01-2020
      Statistics: Used 122 times
      Last Changed: on 27-01-2020 at 08:25 am
      Deal

      Free Ineos Bottle at SiS


      Show Deal
      Terms & Conditions
      Discount: Voucher
      Valid for: New and existing customers
      Discount Type: Deal
      Minimum Order Value: £35
      Expiry Date: 05-01-2020
      Statistics: Used 0 times
      Details:

      Valid only while supplies last. Some exclusions apply.

      Last Changed: on 06-01-2020 at 04:00 pm

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      SiS Promo Codes & Vouchers

      Discount SiS Voucher Details Expires
      50% Take 50% off SIS Protein Bars at SiS Valid until further notice
      20% Grab 20% off at SiS Valid until further notice
      10% Grab 10% off Everything at SiS Valid until further notice
      50% 50% off Energy Range at SiS Valid until further notice
      60% Up to 60% off in the Clearance Sale at SiS Valid until further notice

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