—Molly HigginsPhotograph: Boutayna ChokraneSunday Scaries Mushroom Gummies for $23: Sunday Scaries deliver a noticeable jolt. FAQs About Mushroom Gummies What to Look for When Buying Mushroom Gummies AccordionItemContainerButton LargeChevron Decide if you want a mushroom-exclusive gummy or a blend. Are There Any Potential Side Effects of Mushroom Gummies? AccordionItemContainerButton LargeChevron Functional mushroom gummies are generally considered safe for most healthy adults, but like any supplement, they can cause side effects or interact with medications. How We Test Mushroom Gummies AccordionItemContainerButton LargeChevron Ingredients: I start by checking whether the mushroom gummies contain fruiting body extracts or mycelium, which are the two most common sources of functional mushrooms.