**5. Conclusion**

Probiotics and prebiotics are functional foods that have significant biotechnological benefits with wonderful potential for invention. Though probiotics and prebiotics are likely to be used in treating many communicable and non-communicable disorders but it is very hard to draw conclusions from a number of researches that indicating the therapeutic potential of probiotics and prebiotics because scientists used different strains and prescriptions for various disorders. Further research using reliable regulations will permit more decisive results on the effects of probiotics and prebiotics for treatment of various diseases. Although various products with probiotic, prebiotics and symbiotic are usually available in food and supplement formats, in near future these products will target to specific disease and will be available as drug.
