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Two white bags labeled COMPLEMENT® Strongevity Stack by Complement feature minimalist designs: one highlights plant-based ingredients, the other promotes creatine’s benefits for energy and brain health.
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COMPLEMENT® Strongevity Stack

Want to stay strong for the long haul? The Strongevity Stack combines COMPLEMENT® Creatine with Unflavored Organic Protein to help build and maintain muscle, support brain health, and promote a vibrant lifestyle for years to come.*

This two-month stack pairs daily Creatine with Protein to enjoy as desired.

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  • A yellow and white pouch labeled COMPLEMENT Creatine stands upright. The packaging highlights benefits such as energy, cognition, muscle growth, and reproductive health, and notes 5g servings and 100 servings per package.
    COMPLEMENT® Creatine 60 Servings
    Learn More
  • A bag of COMPLEMENT® Organic Vegan Plant-Based Protein – Unflavored by Complement stands upright next to a black scoop of powder. The bag lists ingredients: almond, chia seed, pumpkin seed, sunflower seed, and yellow pea.
    COMPLEMENT® Organic Plant-Based Protein - Unflavored 30 Servings
    Learn More
  • 100-day money-back guarantee
  • Free USA shipping over $95
  • Supports strength, vitality, and healthy aging to help you stay active and strong.*
  • Supports cognitive function and cellular energy for a sharper mind and sustained daily performance.*
  • COMPLEMENT® Creatine (60 servings): Features Creavitalis® creatine monohydrate for superior absorption to fuel muscle maintenance and longevity.*
  • COMPLEMENT® Unflavored Organic Protein (30 servings): Provides 15g of complete, plant-based protein per serving with clean, organic ingredients and no chalky aftertaste.*
  • Every product is third‑party tested for purity and quality, with clean, evidence-based ingredients you can trust.

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What’s included?

COMPLEMENT® Creatine

60-SERVING SUPPLY

The absolute purest creatine monohydrate to support energy, cognition, strength... and a longer, better life.* Built for more than athletes, it’s for thinkers, movers, and doers.

Supplement Facts
Nutrition facts for Creatine
 Third Party Test Results
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100%

Pure

Creatine

Monohydrate

Fast

Dissolving

in

Water

Absorption-Optimized

Formula

Learn More
A white packet labeled Creatine Pure Creatine Monohydrate lies on a dark surface next to a glass of water. The packet highlights benefits like energy, brain health, muscle growth, and reproductive health.
A bag of Complement Unflavored Organic Protein powder is surrounded by floating protein powder. The packaging highlights its plant-based blend: almond, chia seed, pumpkin seed, sunflower seed, and yellow pea.

COMPLEMENT® Unflavored Organic Protein

30-SERVING SUPPLY

Complete, organic, endlessly versatile plant protein. Made with a transparent blend of real food proteins for an unflavored, never chalky texture.

Supplement Facts

Complement Organic Unflavored Protein Nutrition Facts
 Third Party Test Results
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15g

Plant-Based

Protein

5

Real-Food

Ingredients

100%

Certified

Organic

Learn More

One Stack for All‑Day Energy & Restorative Nights

Supports muscle growth & retention.*

Helps maintain strength & mobility.*

Supports cognitive health & clarity.*

Helps fuel cellular energy production.*

Promotes healthy aging & vitality.*

A smiling woman holds up a Complement-branded bag of Pure Creatine Monohydrate supplement, highlighting benefits like longevity, energy, brain health, muscle growth, and reproductive health. A man in a light blue shirt holds a green smoothie and stands by a wooden table with a bag of Complement Organic Protein powder, measuring scoop, bananas, and a leafy plant in the background. A smiling woman in athletic wear stands in a kitchen, holding and opening a bag of creatine supplement on the counter in front of her. A person in a purple tank top opens a bag of Complement Unflavored Organic Protein powder in a kitchen, with a black Complement shaker cup on the counter nearby.
4.8
117 reviews

Loved By Thousands

Customer Reviews

Based on 117 reviews
89%
(104)
6%
(7)
3%
(4)
0%
(0)
2%
(2)
K
Kate (Bar Harbor, US)
Too early to tell

I’ve only been taking this for a few days, so no way of telling if it will have a positive impact yet. I trust the quality. The packaging is not amazing - doesn’t seal so I have to put the bag inside a zip loc. And I find it hard to scoop out a teaspoon because it’s a tall bag and the product doesn’t fill it. Otherwise, it’s fine.

Hi Kate, thank you for sharing your thoughts! I'm glad you trust the quality of our Creatine. We'll take your feedback on the packaging into account. If you have any questions or need assistance, feel free to reach out. Thanks for your support!

p
paula m. (Hindsville, US)
Packing

Love this creatine but please put a measuring scoop instead of saying heaping teaspoon. Makes me think you are trying to get people to use more than needed to buy more.

Hi Paula, thank you for your feedback! We'll consider adding a measuring scoop for more precise dosing. We appreciate your support!

C
Chris B. (Carlsbad, US)
rate COMPLEMENT® Creatine

Love it!

S
Susan (Sacramento, US)
Awesome product without any aftertaste

Currently taking Bone Vitality which I love…has all the nutrients I want to be taking! Wanted to add more creatine to my diet so I am now taking Complement Creatine powder..love the small amount to take! Love all your products..they are clean, healthy, backed by science and support my health! Thank you!

J
Jennifer H.

Just received this a few days ago ordering was easy shippibg was quick just started using the product

123
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We stand behind our products 100%. If you’re not happy with the results, taste, or experience, we’ll fix it.

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100-Day Guarantee

You have a full 100 days after receiving your product to try it out and see if it’s the right fit for you.

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100% Money-Back

And if you don’t love it within the first 100 days, we’ll issue a full refund. No questions asked. No fine print. That’s the Complement guarantee.

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Frequently asked questions.

Still not sure? Find answers to your questions here.

WHO IS THE STRONGEVITY STACK FOR?

The Strongevity Stack is designed for anyone who wants to support their strength, vitality, and healthy aging — whether you’re active, plant‑based, or simply looking to stay strong as you get older.*

WHY COMBINE COMPLEMENT CREATINE WITH UNFLAVORED ORGANIC PROTEIN?

Creatine supports cellular energy, brain health, and muscle maintenance, while our clean plant-based protein provides the building blocks for lean muscle. Together, they offer a powerful foundation for long‑term fitness.*

HOW DO I TAKE THE STRONGEVITY STACK?

You can take them together (simple mix a serving of each in your shake or smoothie), or separately at various points throughout the day. The key is consistency.

IS THE STRONGEVITY STACK SAFE FOR DAILY USE?

Yes! This two-month stack pairs daily Creatine with Protein to enjoy as desired.
Both products are made with clean, transparent ingredients and are third‑party tested for quality and purity.

IS IT JUST FOR ATHLETES?

Not at all. While athletes love creatine and protein, the Strongevity Stack is just as beneficial for anyone looking to support muscle retention, cognitive health, and vitality as they age.

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COMPLEMENT® Strongevity Stack
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*The statements on this website have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.

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