This is completely normal and harmless! The bright yellow color is caused by excess riboflavin (vitamin B2) being excreted through urine. It's actually a positive sign that your body is absorbing the B-vitamins. Since B-vitamins are water-soluble, your body uses what it needs and eliminates the rest.

Morning is best! B-vitamins support energy production and metabolism, so taking them with breakfast or your first meal helps fuel your daytime energy levels. Taking them in the evening may interfere with sleep for some people due to their energizing effects.

Whole food B-vitamins come from real organic foods (quinoa sprouts, yeast, berries) with naturally occurring cofactors, enzymes, and phytonutrients that enhance bioavailability and absorption. They're also gentler on the stomach than synthetic isolated B-vitamins. Plus, our formula includes probiotics and digestive enzymes to support gut health and B-vitamin synthesis.

Absolutely! This formula is USDA Organic and Vegan certified, making it perfect for plant-based diets. It's also free from all major allergens including dairy, wheat, gluten, eggs, peanuts, soy, tree nuts, fish, and shellfish, plus no artificial colors, flavors, or preservatives.

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.

*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.

LEARN MORE ABOUT OUR PRODUCTS

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