Safety & Testing

Because what you give your baby should be as safe as it is effective.

At Persephone, we know that parents are making one of their most important decisions when choosing a daily supplement for their child. That’s why we go far beyond industry norms to ensure our products are clean, pure, and clinically safe—every single batch.

Third-Party Tested. Clinically Backed.

We partner with Eurofins, a global leader in independent lab testing, to rigorously screen each batch of our toddler probiotic before it ever reaches your home. These tests are conducted at the same scientific standard used in pharmaceutical and clinical settings.

Every lot is tested for:

Pathogens

including Salmonella, E. coli, Listeria, and mold

Heavy metals

like lead, arsenic, mercury, and cadmium

Common allergens

including dairy, soy, gluten, nuts, and shellfish

Microbial purity & potency

to ensure the good bugs are thriving, and the bad ones are gone

Transparency, always.

We believe trust should never be asked for—it should be proven. That’s why every Persephone product comes with a Certificate of Analysis (CoA) that verifies the results of our safety and quality tests. We don’t just say our probiotics are pure and potent—we give you the receipts.

Every batch has a unique CoA that you can access instantly. Our partner Light Labs has a lookup tool to see the full report on your child’s product, down to the very tests it passed.

Certified Clean for Babies & Toddlers

Our probiotic is part of the Clean Label Project: First 1,000 Days™, which applies one of the most comprehensive contaminant screening protocols in the world for infant health.

Safe for infants and toddlers

Backed by 2+ years of lab and real-world testing

Clinically developed & validated

Because little bodies deserve the highest standard.

We test more than required, more often than expected, and always with the same goal: to give you total peace of mind. Because when it comes to your baby’s health, nothing should be left to chance.