If you're constipated, you know something's not right... even if doctors tell you it's nothing to worry about. Paining and straining to go puts pressure on your heart and arteries, slow moving stools can build up dangerous bacteria, infrequent bowel movements can even impact your kidneys and immune function. Plus, it's just downright uncomfortable! But ComfortPro: Premium Probiotic Formula has you covered. Once available only in Japan, this unique strain of probiotic, BB-536, is the ONLY probiotic clinically proven in six human studies to alleviate the three biggest constipation problems at once. BB-536 is totally unique: It's the only probiotic strain with six human studies proving it alleviates hard stools, constipation and bad bacteria overgrowth... the only probiotic strain with over 110 health studies documenting its health benefits... the most researched probiotic in the world... and the #1 best-selling probiotic in Japan. Now available in the U.S. as ComfortPro: Premium Probiotic Formula. Here at Green Valley, we only work with US-based manufacturing facilities that are cGMP (Good Manufacturing Practices) compliant and FDA inspected. Our products are triple tested by our manufacturers to ensure potency and purity and are stored in our temperature and humidity - controlled warehouse right here in the Shenandoah Valley, Virginia. And we ship directly to your doorstep - we don't share warehouse space and we don't hand off your business to a third party to fulfill your order. Best of all, all Green Valley products come with our 90-day Satisfaction Guarantee.