Probiotics are generally regarded as safe to take if you're healthy according to the NCCIH. But if you have a serious illness or a compromised immune system, then you'll want to first get the green light from your doctor.

As for how much you should takeand how often? If you're generally healthy, it's fine to take a probiotic supplement every day, King says. It's also worth incorporating probiotic-filled foods into your dietthink yogurt, kefir, sauerkraut, kimchi, or tempeh.

There's no standard dosage that's right for everyone, though, so consider talking with your doctor or a registered dietitian who specializes in functional eating. They will be able to offer more specific guidance based on the health issue you're trying to address.

Finally, pay attention to how your probiotic supplement makes you feel. If the symptoms you're trying to manage seem to get worse instead of better or you start to experience stomach discomfort, then that could be a sign that the particular probiotic strain doesn't agree with you, King says. In that case, you should take a break and consider trying another strain.

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6 Science-Backed Benefits Of Probiotics & Who Should Take Them - mindbodygreen.com