£19.95
SiS REGO Rapid Recovery is a recovery powder delivering 22g carbohydrate and 20g soy protein isolate (plus 2.5g L-Leucine) per 50g serving. It also provides electrolytes and a full vitamin-mineral profile to support glycogen replenishment, muscle repair, and rehydration post-exercise. Fully vegan-friendly and Informed Sport certified.
Ingredients (per 50g serving)
Soy protein isolate (48%)
Maltodextrin (44%)
L-Leucine (2.5g)
Flavourings (vanilla, chocolate, or strawberry)
Sodium chloride (1.2g)
Thickener (Xanthan gum)
Vitamin-mineral blend: Vitamin C, B1, B2, B6, B12, Niacin, Biotin, Pantothenic acid, Folic acid, Iron, Zinc, Iodine
Sweetener (Sucralose)
No dairy; suitable for vegans
Nutritional Breakdown (per 50g serving)
Calories: 179kcal
Protein: 20g
Carbohydrates: 22g
Sugars: 1–1.7g
Fat: 0g
Salt: 1.2g (480mg sodium)
L-Leucine: 2.5g
Includes: B-vitamins, iron, zinc, iodine
Suitable for Vegans/Vegetarians?
✅ Yes – Vegan-certified (soy-based protein), gluten-free, lactose-free, and with no animal products.
Allergen Information:
Contains: Soy
May contain traces of: Milk (produced in facility handling dairy)
Not sweetened with gluten nor animal-derived ingredients
After an intense workout or race, your body needs the right nutrients to start the recovery process – and SiS ReGo Rapid Recovery Drink is specifically designed to help you do just that.
What I really like about this drink is how it combines both carbohydrates and protein to quickly refuel your body and support muscle repair.
With 22g of carbohydrates and 20g of soy protein isolate per serving, this drink ensures that your muscles get the nutrients they need to start recovering and rebuilding. It also ticks the boxes from a vegan perspective too.
One of the standout features for me is the inclusion of 2.5g of L-Leucine – a key amino acid that plays an essential role in muscle protein synthesis. This means that not only are you replenishing your energy stores, but you’re also helping your muscles recover faster and more effectively. Plus, the added vitamins and minerals help reduce fatigue, so you’re not just recovering from your workout, you’re also supporting your overall health.
Who it’s for:
Perfect for athletes wrapping up a long ride, run, or race – or hitting back-to-back sessions – and want a quick re-fuel that’s not chalky or heavy.
What it does:
Gives your body 22g of carbs to refill glycogen, 20g of soy protein + leucine to kickstart muscle repair, along with sodium and vitamins to rehydrate and restore nutrient levels – all in one shake.
How I’d use it:
Mix two scoops (50g) in approx. 500ml water and sip within 30 minutes of finishing activity. You’ll feel the energy boost and muscle fullness while rehydrating and topping off essential nutrients.
The Science:
Post-exercise Carbohydrate + Soy Protein Enhances Muscle Recovery
Study: This randomised trial compared recovery after intense exercise using carbohydrate alone vs. carbohydrate + soy protein solution. Measures included muscle performance and glycogen status.
Frontiers in Physiology (Tan et al., 2021)
https://www.frontiersin.org/articles/10.3389/fphys.2021.765473/full
The soy-carb mix improved fatigue recovery and helped preserve performance better than carbohydrate alone – validating REGO’s soy-based protein design for real-world recovery.
Soy Protein Supplementation Supports Performance & Muscle Gains
Study: A 2023 systematic review analysing randomised controlled trials on soy protein supplementation effects on active individuals’ performance, lean mass and fatigue markers.
Sports Medicine (Zare et al., 2023)
https://link.springer.com/article/10.1007/s40279-023-01899-w
The review confirmed soy protein supports lean mass gains and endurance performance on par with whey, while also improving antioxidant markers – perfect for athletes using plant-based post-workout fuel like ReGo.
