If you’ve noticed that your skin is out of whack, your stomach is more bloated than usual, or you’re just feeling a little blah—it’s possible that your gut needs a boost. Your gut is surprisingly important in regulating your body’s specific ecosystem, so keeping it in check should be at the top of your to-do list. But rather than go on an all-juice cleanse or fast that can prove harmful, it’s much better—and easier—to add a probiotic supplement into your daily routine. There are tons to choose from, and they all promise different things, so we rounded up our favorites to get you started. Whether you’re looking for a good all-around pick or ones that are specifically gluten-free or vegan, we’ve got you covered.