Yes, there are several coupons available for Great Oral Health. One of them offers 50% off on orders over $80. There's also a coupon code that provides an extra 10% off store-wide. Another coupon code gives 10% off site-wide. Yet another coupon code allows you to save 10% off select products. There's also an unverified code that might give you an extra 20% off site-wide. Please note that these codes might have expired or may not work, so it's recommended to check them on the website. If these codes do not work, you might want to try common coupon phrases that have worked in the past.