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XS Sports Nutrition · Complete Stack

Build muscle with products that prove it.

Clinically studied formulas, third-party certified, from XS — Amway's sports nutrition brand sold in ~60 countries. Everything you need around your training, in one stack.

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180-day satisfaction guarantee · Guest checkout · No account needed

XS Protein Shakes Rich Chocolate XS Muscle Multiplier Berry Blast XS Grass-Fed Whey Chocolate XS Creatine+
XS Protein Bars Chocolate Berry XS Protein Bars Chocolate Peanut Butter
30 gwhey isolate
5 gclinical-dose creatine
9essential amino acids
10weeks, clinically studied*

Why this stack?

#1 studied

Creatine is the most researched sports nutrition supplement in the world.

10 weeks

Daily EAA use is clinically proven to increase lean muscle, power and strength.*

NSF

Third-party certified — what's on the label is what's in the product. Rare among competitors.

Athlete training with XS Grass-Fed Whey Post-workout recovery

Why XS?

  • Sports nutrition backed by Amway — sold in ~60 countries
  • NSF Contents Certified across key products — the only NSF-certified option vs Quest® and One® bars
  • Clinically studied formulas: clinical-dose creatine, creatine + HMB, all 9 essential amino acids
  • Clean labels: grass-fed whey with 7 ingredients, no artificial colors, flavors or preservatives
  • Backed by Amway's 100% Satisfaction Guarantee — 180-day returns on most products

What's in the stack

XS Creatine+ canister

XS™ Creatine+

$55

5 g clinical-dose creatine monohydrate + 2 g Calcium HMB + electrolytes. Evidence shows creatine + HMB together may outperform either alone for lean mass and strength.†

30 servings Unflavored Sugar free
XS Grass-Fed Whey Chocolate bag

XS™ Grass-Fed Whey – Chocolate

$61

30 g premium whey isolate from grass-fed, rBGH-free cows, 6.9 g BCAAs, just 7 ingredients and 1 g carbs.*†

NSF Contents Certified 20 servings
XS Muscle Multiplier Berry Blast

XS™ Muscle Multiplier – Berry Blast

$50

All 9 essential amino acids in a 5:1:1 BCAA ratio — clinically proven over 10 weeks to increase lean muscle, power and strength while reducing body fat.*†

NSF Contents Certified 30 servings
XS Protein Bars Chocolate Berry

XS™ Protein Bars – Choc Berry

$42

20 g whey + casein protein per bar. The only NSF-certified bar next to Quest® and One®.†

NSF Contents Certified 12 bars
XS Protein Bars Chocolate Peanut Butter

XS™ Protein Bars – Choc Peanut Butter

$42

Same 20 g protein with the fewest carbs of the three (19 g) — the lean option for cutting phases.†

NSF Contents Certified 12 bars
XS Protein Shakes Rich Chocolate

XS™ Protein Shakes – Rich Chocolate

$53

25 g whey + casein, ready to drink, 1 g sugar — more protein and cleaner than Muscle Milk® Zero.†

Kosher 12 shakes
A complete month of training nutrition
$303

daily creatine, 20 whey servings, 30 EAA servings, 24 bars and 12 shakes. Bought piecemeal from "premium" brands, this stack routinely costs more — without third-party certification.

Good questions to ask

Why does NSF certification matter?

Sports supplements are notorious for label inaccuracy and contamination. NSF Contents Certification means an independent lab verified that what's on the label is what's in the product. Most competitor bars and aminos aren't certified at all.

Is this brand legit?

XS is Amway's energy and sports nutrition brand, sold in roughly 60 countries. Amway also owns Nutrilite, the world's #1 selling vitamins & dietary supplements brand† — the same supply-chain and testing standards sit behind XS.

What if it's not for me?

Amway backs products with a 100% Satisfaction Guarantee — most products can be returned within 180 days for an exchange or refund. Trying it is genuinely low-risk.

How does ordering work?

The button opens a ready-made cart on amway.com. You'll see "shopping with" a name at the top — that's the personal referral of whoever shared this page. Prices are identical, and you can check out as a guest, no account needed.

Build muscle with products that prove it.

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Ships direct from Amway · 180-day satisfaction guarantee

†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

*When combined with regular weight/resistance training and a healthy, balanced diet. Muscle Multiplier claim based on daily use for 10 weeks with resistance training and a balanced diet.

Competitor comparisons based on product label and online claims as of May 2024 — see amway.com product pages. Creatine+ intended for adults 18+.

†"World's #1 selling vitamins & dietary supplements brand" — Source: GlobalData (gdretail.net/amway-claims). Satisfaction Guarantee terms: amway.com/amway-promise; some consumable items are non-returnable unless defective — see Amway's return policy for details.

This page is provided by an Independent Business Owner of Amway. Product information sourced from amway.com, July 2026.