Reflex Instant Whey Pro is the brand's flagship protein powder, trusted for nearly two decades. Each 30g serving delivers 24g of high-quality protein at around 80% protein content, made from a blend of whey isolate, whey concentrate and milk protein concentrate. It's instantised for smooth, lump-free mixing and includes added digestive enzymes and friendly bacteria, making it a lean, versatile everyday protein for muscle recovery and growth.

The three sit at different points on the lean-to-rich scale. 100% Whey is a pure concentrate (21g protein, 71%) — the richest and best value. Isolate Pro is pure isolate (25g protein, 83%) — the leanest and purest. Instant Whey Pro sits in the middle: a blend of isolate, concentrate and milk protein giving 24g protein at 80%, leaner than concentrate but more affordable than isolate. Choose it if you want a high-protein, lower-calorie shake that balances quality, versatility and price.

Yes. With 24g of protein for around 108 calories per serving and low fat, Instant Whey Pro is well suited to anyone looking to build or maintain lean muscle without excess calories. It supplies all the essential amino acids, including leucine to trigger muscle growth, helping you recover after training while keeping your overall intake controlled — ideal if you're toning, sculpting or simply want high protein without the extras.

Yes — versatility is one of its key strengths. As well as a standard shake (mix 30g with 180–200ml water or skimmed milk), it blends easily into smoothies and porridge, and stirs into Greek yoghurt for a quick high-protein dessert (try 30g with 100g yoghurt). This makes it easy to hit your protein target across the day, not just around training.

You can take up to 3 servings daily, ideally post-workout when your muscles are primed to use protein. It's designed to digest smoothly thanks to a digestive enzyme complex (DigeZyme®) plus friendly bacteria (LactoSpore® and added lactic acid bacteria), so more of the protein is absorbed and put to work. As a dairy-based product it contains milk and soya, so it isn't suitable for anyone with a milk allergy.

Yes, you have the right to cancel your order within 14 days from the date you receive your items, without needing to give a reason.

You have 14 days from the date of delivery to cancel your order under your cooling-off period rights. This allows you to change your mind about your purchase and return the item, provided it is unused and in its original, resellable condition.

To arrange a return or refund, please contact our Customer Service team via email on info@reflexnutrition.com or call 01273 303817 with your order number and delivery address, and we will guide you through the next steps.

Yes, return shipping is your responsibility to arrange and pay for.

If a delivery fails or you don't collect your parcel and it comes back to us, additional charges may apply.

Refunds go back to your original payment method once we've received and processed your return. Timings vary by payment provider; your bank or card issuer will confirm the exact date.

If there is an issue with your order, please contact our Customer Service team via email info@reflexnutrition.com or call 01273 303817 with your order number and delivery address as soon as possible so we can investigate and resolve the issue.

Items must be unused and in their original, resellable condition, exactly as you received them. Pack them securely in appropriate packaging to protect them in transit.

We can't accept returns that arrive damaged due to poor packaging.

We are unable to accept returns for certain items where it would not be suitable for resale, such as products that have been opened, used, or are not in a resellable condition.

If you no longer have your receipt or order confirmation, please contact our Customer Service team via email info@reflexnutrition.com or call 01273 303817 with as much information as possible (such as your name, email address, or delivery postcode), and we will do our best to locate your order.

Replacements or exchanges will be processed once your returned item has been received and inspected. Delivery times for replacements will follow standard shipping timeframes.

Yes, items purchased using a discount code or as part of a promotion can still be returned, provided they meet the returns criteria. This means items must be unused and in their original, resellable condition, exactly as you received them. Pack them securely in appropriate packaging to protect them in transit.