★ FOR RAPID WEIGHT LOSS PROGRAMMES
Losing weight quickly?
Don't lose the muscle that comes with it.
Altralife Retain is a 60ml protein shot with 20g of pure BLG whey. Protein contributes to the maintenance of muscle mass. 80kcal. No fuss. No appetite required.
20g Pure BLG whey protein
Just 81kcal in 60ml serving
Zero sugar zero carbs
Altralife Retain Berry (15 servings)
15 Bottles of Retain in Berry flavour
A fast, low-calorie way to get real protein in — even on days your appetite has dropped.
Each 60ml shot delivers 20g of protein from pure BLG whey for just 81kcal. Protein contributes to the maintenance of muscle mass, which matters most while you're in a calorie deficit — but getting enough of it can be hard when eating less is the whole point.
Retain is built to solve that. No shaker, no powder, no 300ml drink to force down — just a quick shot that fits into a calorie-controlled or Total Diet Replacement plan without taking up meaningful room in your day.
Why BLG whey
BLG (beta-lactoglobulin) is a purified fraction of whey protein, naturally higher in leucine than standard whey isolate — independent research puts it at around 45% more. That's part of why Retain can deliver a concentrated protein serving in just 60ml.
What's in it
- 20g protein (pure BLG whey)
- 81kcal
- 60ml serving
The part of rapid weight loss nobody warns you about
When you lose weight quickly — through medically supported weight loss — not all of that weight is fat.
Independent research on rapid and surgical weight loss consistently finds that a proportion of weight lost is lean muscle mass, not just fat.
Muscle isn't just about strength. It plays a role in metabolism, joint support, and staying mobile and independent as you age. Losing it quickly, particularly while eating less, is a trade-off many people aren't warned about.
Protein is the main dietary lever available to help support your muscle mass while you're in a calorie deficit — and it's often hardest to get enough of exactly when your appetite has dropped.
Muscle helps with strength
Muscle helps with joint support
Meet Altralife Retain
Retain is a 60ml protein shot with 20g of pure BLG whey protein, at just 81kcal. It's designed for people who struggle to get enough protein through food alone — including those on a low-appetite, low-calorie, or Total Diet Replacement plan — without it taking up meaningful room in a calorie-controlled day.
No shaker, no powder, no large drink to get through. Just a quick shot.
Formulated for structured weight loss & TDR programmes
Built for exactly what it needs to do.
Every part of Retain is designed around one job: getting real protein in, even when appetite and time are limited.
Small serving size
Small enough to take in seconds — perfect for low appetites.
Pure BLG whey protein
20g of protein per shot from purified BLG whey, naturally higher in leucine than standard whey isolate.
Low calorie
Just 81kcal per shot, designed to fit within a calorie-controlled programme.
This is the same purified BLG technology used in clinical and medical nutrition formulations for patients at risk of muscle loss - now in a fast, everyday format.
Built for exactly what it needs to do.
Every part of Retain is designed around one job: getting real protein in, even when appetite and time are limited.
Why BLG whey?
Most protein shots and shakes use standard whey protein isolate or concentrate. Retain is different — it's made with BLG (beta-lactoglobulin), a purified fraction of whey protein.
BLG is naturally higher in leucine, one of the essential amino acids found in protein. Muscle tissue is maintained through a natural, ongoing process of breakdown and rebuilding. Diet — particularly protein and the amino acid leucine — plays a role in supporting that rebuilding process, especially when calorie intake is reduced.
Standard whey isolate
Leucine content per gram of protein
Pure BLG
Leucine content per gram of protein
Altralife Transformations That Inspire
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