How to Choose a Safe, High-Quality Protein Powder

1. LOOK FOR THESE SEALS

Third-Party Testing = Quality & Safety

• NSF Certified for Sport

• USP Verified

• Informed Choice / Informed Sport

• ConsumerLab.com Approved

These certifications confirm your protein powder has been independently tested for purity, potency, and label accuracy.

2. KEEP INGREDIENTS CLEAN

• First ingredient = the protein source (whey isolate, pea, or soy)

• < 5 g added sugar per serving

• Fewer than 10 ingredients

• No artificial colors, fillers, or caffeine

• Avoid “detox,” “miracle,” or “proprietary blend” claims

  
  

3. CHOOSE WHAT FITS YOUR NEEDS

Protein Type	Key Features	Best For
Whey Isolate	Fast-digesting, complete, low lactose	Muscle repair, post-workout
Casein	Slow-release, keeps you full	Evening or appetite control
Soy / Pea / Rice Blend	Plant-based, complete when mixed	Vegan or dairy-free

4. RED FLAGS

• No third-party testing listed

• Protein < 20 g per serving

• Long ingredient list or unpronounceable additives

• “Fat-burning” or “miracle” claims

  
  

5. PRACTICAL TIPS

• Aim for 20–30 g protein per shake

• Mix with milk, soy milk, or Greek yogurt for extra protein

• Use as a supplement, not a meal replacement

• Store in a cool, dry place

  
  

Example Protein Powders

All options below are third-party tested by ConsumerLab for purity and label accuracy. Prices and details may vary slightly over time.

⭐ Top Pick – Whey Isolate

Nutricost Grass-Fed Whey Protein Isolate (Unflavored)

• 30g protein per scoop (~90% protein by weight)

• ~130 calories, no sweeteners or fillers

• Third-party tested by ConsumerLab

• Very low lactose (~0.3g)

• Best mixed into warm liquids or smoothies

• Excellent cost per serving (~73¢ per 20g protein)

  
  

⭐ Top Pick – Casein

California Gold Nutrition Micellar Casein — Unflavored

• Third-party tested by ConsumerLab

• 25g protein per scoop (~83% protein by weight)

• About $0.74 per 20g protein

• Naturally high in calcium (~600 mg per serving)

• Mild flavor; mixes well in a shaker

• Passed heavy-metal screening for purity

  
  

⭐ Top Pick – Pea Protein Isolate

NOW Sports Pea Protein — Natural Unflavored

• Top Pick for Pea Protein and Overall Top Pick 2025

• 24g protein per scoop; 42¢ per 20g protein

• 100% vegan; mild flavor and smooth texture

• Slightly higher sodium (~320 mg)

• Environmentally friendly and budget-friendly option

Sara Dow, MS, RDN, LD

Sara Dow Nutrition, LLC

201 S., 3rd Street

Watertown, WI 53094

920-567-8147