The functional mushrooms that we use are the most safe and well-studied mushrooms of all, and there are basically no risk of any mold problems with high-quality mushroom extracts. Of course still idiosyncratic reactions are possible and some individuals are very sensitive, so we recommend caution to everybody when starting anything new, especially any potent functional substances like our mushroom extracts.
Of course we recommend that those sensitive to mold stay away from products with toxins (common sources are low-quality coffee, chocolate, bread…). We work with 3rd party labs to test each batch for molds and toxins, to make sure they are safe for everyone! We are happy to share you the latest (clean) results if you shoot our Product manager Lari an email at email@example.com.