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CELLULAR DEFENSE
The crisis is invisible.

Your body is
accumulating plastic.

You have
a defense.

Scroll to learn more
GUARD CELLULAR DEFENSE
001 / The Invisible Crisis

Microplastics have been found in human blood, brain, placenta, arteries, and virtually every organ tested. They are in the air you breathe, the water you drink, and the food you eat. There is no escaping them, but there may be a way to fight back.

0 % of arterial plaque samples contain microplastics Patients with microplastics in arterial plaque had a 4.5x higher risk of heart attack, stroke, or death. NEJM 2024
0 % of human testicles tested contain microplastics Human sperm counts have dropped over 50% since the 1970s. Microplastics may be a contributing factor. Toxicological Sciences 2024
0 ,000 plastic fragments per liter of bottled water That is every single bottle of water you drink. Exposure is unavoidable. PNAS 2024
002 / The Mechanism

Your body already has a master defense switch.

It's called Nrf2. Deep inside every cell is the Nrf2 pathway, your body's master regulatory system for defense against oxidative stress and environmental toxins.

When activated, it turns on your body's own defense machinery.

Nrf2 activation upregulates antioxidant production, triggers cellular repair mechanisms, and turns on the transcription of over 200 cytoprotective genes, including Phase II detoxification enzymes that convert fat-soluble toxins into water-soluble compounds your body can excrete.

0% increase in urinary benzene excretion.

Sulforaphane is the most potent natural activator of this pathway ever discovered. It doesn't mask symptoms. It activates your body's own defense machinery. A 291-person randomized controlled trial demonstrated sulforaphane significantly enhances the body's ability to excrete environmental pollutants.

Egner et al. 2014, Cancer Prevention Research
003 / The Formula

Glucoraphanin

100 mg from broccoli seed extract

The most stable and clinically studied precursor to sulforaphane. The same form used in the landmark Egner et al. human detoxification trials at Johns Hopkins.

Egner et al. 2014

Myrosinase

75 mg from mustard seed powder

The enzyme that converts glucoraphanin into active sulforaphane. Without it, your body converts as little as 5%. With it, conversion reaches up to 40%.

Mastaloudis et al. 2026

Vitamin C

100 mg ascorbic acid

Essential cofactor for myrosinase enzymatic activity. 100 mg ensures the optimal conversion environment for maximum sulforaphane yield.

Mastaloudis et al. 2026
004 / Why This Exists

We built Guard because we couldn't find what we were looking for.

Every sulforaphane supplement we tested was either underdosed, untested, or hiding behind proprietary blends. So we made one that isn't.

We are testing it on ourselves first. Every batch will be third-party tested. Every certificate of analysis will be published.

No proprietary blends. No filler. No mystery.

Backed by 3,000+ peer-reviewed studies.

Sulforaphane is one of the most studied natural compounds in the world. Over 61 registered clinical trials from institutions including Johns Hopkins, Stanford, and Harvard. It is already part of the daily protocols publicly discussed by Andrew Huberman, Bryan Johnson, and Dr. Rhonda Patrick. This is not fringe science. This is one of the most validated natural compounds in modern research.

The industry has a transparency problem.

83% of Americans are concerned about microplastics, yet no premium supplement brand has offered a credible, science-backed solution. Most sulforaphane supplements skip myrosinase entirely, leaving consumers with as little as 5% bioavailability. Independent testing has shown leading brands deliver a fraction of what is on the label. No sulforaphane brand carries third-party certification. Guard SRF is clinically dosed, third-party tested, and will publish every certificate of analysis.

005 / Questions

Frequently Asked

Sulforaphane is the most potent natural activator of the Nrf2 pathway, your cell's master switch for defense. Discovered at Johns Hopkins in the 1990s, it activates transcription of over 200 cytoprotective genes, including Phase II detoxification enzymes that help your body excrete environmental toxins.

Most sulforaphane supplements contain only 25-30mg of glucoraphanin without the myrosinase enzyme needed to convert it. Without myrosinase, bioavailability drops to as low as 5%. SRF delivers 100mg of glucoraphanin co-formulated with 75mg of mustard seed myrosinase and 100mg of vitamin C as an enzymatic cofactor, achieving up to 40% conversion to active sulforaphane. That is a clinically validated dose, not a token amount.

Sulforaphane has been studied extensively in human clinical trials with an excellent safety profile. SRF uses clinically validated doses of well-researched ingredients. As with any supplement, consult your healthcare provider if you are pregnant, nursing, or taking medications.

SRF is currently in development. Join the waitlist to be the first to know when we launch, and to lock in founding member pricing and first access.

Guard is subscription-first (30 capsules, 30-day supply). Founding members from the waitlist get first access and preferred pricing. Your first order ships in a premium glass bottle welcome kit. Refills ship in compostable pouches.

Every batch of SRF will be third-party tested, and every certificate of analysis (COA) will be published and linked directly from the product page. Transparency is not a marketing angle for us. It is the foundation.

Fresh broccoli sprouts offer the highest sulforaphane bioavailability (30-40%), but come with real trade-offs: a 3-5 day growing cycle, twice-daily rinsing, mold risk, about one week of shelf life, and no dose standardization. SRF delivers a clinically validated dose in a stable, convenient capsule with co-formulated myrosinase for consistent conversion every time.

Your cells have a guardian now.

Join the waitlist for founding member pricing and first access.

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