Our formula contains clinically studied L. helveticus and B. longum probiotic strains that support the gut-brain axis—the two-way communication between your digestive system and brain. Combined with our Stress Support Blend (Theanine, Ashwagandha, Rhodiola), it helps promote emotional balance, relaxation, and mental clarity.

No refrigeration needed! Our shelf-stable bottle technology uses a multi-phase moisture barrier to maintain potency at room temperature. The Bio-Enhanced Acid Resistant Strains (BEARS) also ensure the probiotics survive and remain effective without refrigeration.

Most people notice improved digestion within 1-2 weeks. For mood and stress support benefits, allow 4-8 weeks of consistent daily use as the gut-brain axis strengthens and beneficial bacteria establish in your system.

Generally yes, but if you're on antibiotics, take this probiotic at least 2-3 hours apart. The adaptogenic herbs (Ashwagandha, Rhodiola) may interact with certain medications, so consult your healthcare provider if you're taking prescription medications or have health conditions.

*These statements have not been evaluated by The Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

What FZKL is known for


What Our Customers Say

"I feel like my skin looks more radiant and my joints feel more flexible since starting this collagen. Love that it's pure and unflavored — mixes perfectly into my morning coffee with no taste or texture."

-Janifer smith

"I feel more energized and less sluggish since adding this to my morning routine. Love that it's packed with organic greens and superfoods — no artificial anything, just pure plant-based nutrition."

Jason Smith

"I feel more energized throughout the day and less run down after workouts since starting this multivitamin. I love knowing it’s organic and clean — no junk fillers, just real nutrition."

- Mark S.

"I feel more energized throughout the day and my hair and nails look healthier since starting this multivitamin. Love knowing it's organic and from real food sources — no synthetic fillers, just clean nutrition tailored for women."

— Jessica M.

"I feel calmer and my digestion has improved since starting this probiotic. Love that it's clean, science-backed, and actually works for both gut and mood."

— Sarah M.

"I feel stronger in the gym and recover faster since adding this creatine to my routine. Love that it's pure, unflavored, and mixes easily — no fillers, just clean performance support."

— Jason R.

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Everything You Need to Know!

Frequently Asked Questions

FZKLfit provides science-backed sports nutrition supplements for performance, recovery, sleep support, and overall wellness.

Yes — all supplements are formulated with clean, clinically supported ingredients and made without harmful fillers or artificial additives.

Lay your performance-wellness foundation first with our Coenzymated Advanced Men’s or Women’s Multi, one of our Probiotics (We have quite a few. If not sure, start with our Advanced Synbiotic) and our Ultra Omega 3 Mini. You can build upon that with our Super Collagen and Ultra Greens which are amazing too!

Our muscle recovery products are designed to reduce inflammation, boost repair, and improve post-workout performance.

Yes — FZKLfit offers worldwide shipping, with costs and delivery times varying by location.

We offer a satisfaction guarantee — if you’re not happy with your order, you can return or exchange it within the specified timeframe