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REGO Whey Protein - 1.35kg - Chocolate

A premium whey protein powder designed to rebuild and strengthen muscle after shorter, high-intensity sessions.
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HOW DO SUBSCRIPTIONS WORK?

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2. Choose your frequency 

3. Place order

4. Manage your subscription from your account

0% Off
$89.99 Was $89.99

Member $85.49
Elite membership included with a subscription

$2.00/serving

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Shipping $5.99 on orders up to $49.99. Free shipping on $50+ orders.
Alaska & Hawaii excluded from shipping.

INGREDIENTS

Nutritional Information

Nutritional Information

Next Working Day Delivery Information:

Weekdays: Orders placed before 6:30pm will be delivered the next day - including on Saturdays.
Weekends: Orders placed before 1pm will be delivered the next day - including Sundays.
Bank Holidays: Orders will not be delivered on Bank Holidays. Any orders placed on a Bank Holiday will not be collected from our warehouse until the next non-holiday day, for delivery the following day.

Please note that Next Day Delivery excludes these postcodes: AB31-56, BF (all), BT (all), FK17-21, GY (all), HS (all), IM (all), IV (all), KA (all), KW (all), PA20-80, PH (all), TR21-25, ZE (all)

Please see specific promotion Terms & Conditions for details BFPO Addresses We do ship to BFPO addresses (with Royal Mail) but for active combat zones there is a strict 2kg weight limit (as with all deliveries to BFPO addresses), so please take this into account when ordering. As a guide, with careful packaging we can just get away with a 1.6kg tub. All orders under this weight limit will be treated as standard UK orders. All orders over this weight will be priced incrementally according to their weight (£5 per 2kg increase). If you have any queries regarding a BFPO address, please contact our Customer Service Team who will be happy to assist with your order.

OPTIMIZE YOUR RECOVERY

REGO Whey Protein delivers 22g of quality whey to accelerate recovery, support lean muscle growth, and reduce soreness after powerful workouts.

RESTORE AND STRENGTHEN

High-quality whey protein helps rebuild and repair muscles after intense effort.

COMPLETE AMINO ACID PROFILE

Contains all nine essential amino acids, including key BCAAs for faster recovery.

QUICK ABSORPTION

Fast-digesting formula designed for rapid muscle repair post-workout.

  1. Vitamin B1 & B2 contribute to carbohydrate conversion
  2. Vitamin B6 aids protein metabolism.
Taylor Spivey pool side making a REGO Whey Protein drink in a SiS Black ShakerTaylor Spivey pool side making a REGO Whey Protein drink in a SiS Black Shaker

ACCELERATE MUSCLE REPAIR

Shorter, less-intense sessions don’t drain your carb stores, but they still break down muscle tissue that needs to be repaired. To recover right, your body needs quality protein to rebuild and grow stronger.

REGO Whey Protein provides 22g of fast-absorbing whey and all nine essential amino acids to support muscle protein synthesis and prepare you for your next training session.

WHY ELITES CHOOSE REGO WHEY PROTEIN

  • Build and maintain muscle mass after shorter workouts.

  • A simple and convenient way to boost protein intake.

  • Delivers key amino acids that support rebuilding muscle.

  • Mixes easily with water for a smooth, clean taste.
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A scoop of SiS Whey PowderA scoop of SiS Whey Powder

SUGGESTED USE

Add 30g of powder (one scoop) to 10 oz (300 ml) of cold water and shake well. 

Best consumed between 30–60 minutes post-workout to maximize recovery benefits.
Recommended to weigh out for the most accurate measure.

BUILT BY SCIENCE

Built for athletes who train hard and recover wisely, REGO Whey Protein provides the precise protein your body needs to rebuild lean muscle, reduce soreness, and restore strength between sessions. Every scoop supports consistent performance day after day.

NATURALLY HIGH-PROTEIN

22g of natural, complete protein per serving.

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NATURALLY HIGH-PROTEIN

Whey is a naturally rich source of protein that delivers all the essential amino acids your body needs to rebuild. It’s loaded with branched-chain amino acids (BCAAs), including leucine, which triggers the muscle-building process and reduces breakdown after training.

Whey digests quickly, allowing your body to absorb and use it fast, helping kickstart repair and restore muscle function when consumed within one to two hours post-exercise. It’s also naturally high in compounds that support immune function, keeping your recovery strong and your performance consistent.

FULL-SPECTRUM AMINO SUPPORT

All nine essential amino acids for total recovery.

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COMPLETE AMINO ACID PROFILE

Whey protein is considered a complete protein because it provides the full range of nine essential amino acids, with an especially high concentration of BCAAs that drive repair and muscle growth. Among them, leucine plays the lead role, signaling your body to start muscle protein synthesis: the key process that builds strength, prevents breakdown, and supports overall performance.

 

Nutrition Overview Science