Probiotics are usually bacteria which live in your gut. Different strains of probiotic have been shown to have a variety of different positive effects on your health.
Finding the right strain or the right combination for your particular need might need a brief discussion with your healthcare provider. It is important to note that different strains may be more suited than others to your healthcare requirements.
There are still some unknowns regarding treatment with probiotic supplements. While they are generally considered safe, people who have immune deficiency or other illness should check what they consume carefully, along with discussing with their healthcare provider. Some authorities suggest pregnant women should exercise caution when using probiotics, although there are several studies suggesting that certain probiotics can be helpful in pregnancy.