Clear whey comparison
Syntrax Nectar Native Whey Protein Isolate vs Isopure Clear Protein
Isopure Infusions scores higher on our standard, 75/100 to 71/100. It earns more points for ingredient simplicity (natural flavors vs mixed natural and artificial). We could not verify a current price for Isopure Infusions, so we can't compare cost.
Both are scored out of 100 against our published standard: protein density, third-party testing, label transparency, sugar, ingredient simplicity and verified label data. Every number below is from the manufacturer's label; last checked 2026-10-14.
Syntrax
Nectar Native Whey Protein Isolate
Isopure
Clear Protein (formerly Infusions)
Side by side
Per serving, from each label. Bold marks the better score, protein density, sugar and cost where the two differ. How we score
| Compared | Syntrax Nectar | Isopure Infusions |
|---|---|---|
| Our score | 71/100 | 75/100 (better) |
| Protein density | 30 / 3082% of each scoop is protein | 30 / 3080% of each scoop is protein |
| Third-party testing | 0 / 25No verified independent testing program | 0 / 25No verified independent testing program |
| Label transparency | 20 / 20Fully disclosed formula, no amino spiking | 20 / 20Fully disclosed formula, no amino spiking |
| Sugar | 10 / 100 g sugar per serving | 10 / 101 g sugar per serving |
| Ingredient simplicity | 6 / 10Mix of natural and artificial flavors or sweeteners | 10 / 10 (better)Natural flavors and sweeteners |
| Verified label data | 5 / 57 of 7 label values verified | 5 / 57 of 7 label values verified |
| Type | Clear Whey | Clear Whey |
| Protein per serving | 23 g | 20 g |
| Serving size | 1 scoop (28 g) | 25 g (about 1 scoop) |
| Protein by weight | 82% (better) | 80% |
| Sugar | 0 g (better) | 1 g |
| Calories | 90 | 90 |
| Cost per 25 g protein | $2.29 | Not verified |
| Price per serving | $2.11 | Not verified |
| Third-party certifications | None found | None found |
| Sweeteners | Acesulfame Potassium, Sucralose | Steviol Glycosides |
| Allergens | Milk, Soy | Milk, Soy |
| Proprietary blend | No | No |
| Added free amino acids (amino spiking) | No | No |
| Last checked | 2026-10-14 | 2026-10-13 |
Which to choose
Only the differences in our records. A value we couldn't verify never counts as a difference.
Choose Syntrax Nectar if…
- You want more protein per serving (23 g vs 20 g).
- You want less sugar (0 g vs 1 g per serving).
- You want a powder the brand labels lactose-free, grass-fed, kosher and halal (our record for Isopure Infusions has no such label).
Choose Isopure Infusions if…
- You prefer natural flavors and sweeteners (Syntrax Nectar uses a mix of natural and artificial ones).
The two powders
Good to know
Labels and prices change, so check the package before buying, especially if you have allergies. If you are pregnant, nursing, buying for a child or managing a health condition, ask your doctor before adding a supplement.