Best Clear Whey Protein After 40
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Clear whey protein isolate has gone from a novelty to a genuine category, and three brands dominate the conversation: Isopure, NutraBio, and GHOST. We’ve reviewed all three individually and compared them head-to-head — here’s our shortlist depending on what you’re optimizing for.
Our top picks at a glance
| Pick | Product | Protein/serving | Price/serving |
|---|---|---|---|
| Best overall value | NutraBio | 20 g | ~$2.00 |
| Highest protein | GHOST | 25 g | ~$2.75 |
| Widest flavor variety | Isopure | 20 g | ~$2.49 |
Best overall value: NutraBio Clear Whey Isolate
NutraBio delivers the lowest cost per serving of the three while still hitting 20 grams of protein, under 80 calories, and full-disclosure labeling with no proprietary blends. For most people who just want a solid clear whey without paying a brand premium, this is our top recommendation. See our full NutraBio review.
Highest protein per serving: GHOST Clear Whey
GHOST delivers 25 grams of protein per serving, five more than the other two, at a modest price premium. If you’re trying to hit a daily protein target in fewer servings, this is the most efficient option. See our full GHOST Clear Whey review.
Widest flavor variety: Isopure Clear Protein
Isopure has the largest permanent flavor lineup of the three (8 options) and the longest track record in the category. It costs the most per serving of the group, but if flavor boredom is what usually derails your protein habit, the variety may be worth it. See our full Isopure review.
Want a deeper side-by-side comparison?
See our full Isopure vs NutraBio vs GHOST comparison for a more detailed spec-by-spec breakdown, or our Clear Whey vs Regular Whey guide if you’re not sure the clear format is right for you at all.
Bottom line
You won’t go wrong with any of the three. Choose NutraBio if value matters most, GHOST if protein-per-serving is your priority, and Isopure if flavor variety keeps you consistent long-term.
Sources
- Manufacturer product pages and label data for Isopure Clear Protein, NutraBio Clear Whey Isolate, and GHOST Clear Whey.
- Pricing checked from manufacturer product pages at the time of writing; prices change frequently and may not reflect current promotions.