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SYNTHA-6 Isolate Protein Powder, Peanut Butter Protein Powder with Whey Protein Isolate, Milk Protein Isolate, Peanut Butter Cookie, 48 Servings

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$94.99
Sep 13 · Macy's
Best price
$94.99
−0% vs high
14-day high
$94.99
All stores
$95$95$95
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $94.99 at Macy's. Highest: $94.99. Current best is 0% below the 14-day high.

About this product

BSN Syntha-6 Isolate is a protein powder formulated with a 50/50 blend of whey protein isolate and milk protein isolate. Designed for post-workout recovery, it provides fast- and slow-digesting protein sources to support muscle repair and growth. Each serving delivers 25 grams of protein and 11 grams of essential amino acids. The peanut butter cookie flavor mixes easily into a milkshake-like consistency, making it a convenient option to consume anytime—after exercise, between meals, or when protein intake is low. This supplement supports muscle-building goals when combined with regular physical activity.

  • 25g protein per serving
  • 50/50 whey and milk protein isolate
  • 11g essential amino acids
  • peanut butter cookie flavor
  • mixes into milkshake consistency
  • made in USA

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SYNTHA-6 Isolate Protein Powder, Peanut — Price History