LL - What ensures the ingredients in FloraThin reach the gut?

In general, most Lactobacillus, Bifidobacterium, and Streptococcus species of probiotics (all very common in supplements) do not need enteric coating as they can survive passage through the stomach. Lactobacillus species are also considered intrinsically resistant to stomach acid, which is another assurance that the probiotics will reach your gut. Some bacteria have a polysaccharide (or complex carbohydrate) capsule that protects the inner organism. 

Polysaccharides are ubiquitously present on the cell surface of lactobacilli and are considered to contribute to the species- and strain-specific probiotic effects. Other species of probiotics also have a complex electrolyte pump that pumps acid out of the cell, providing protection from destruction.

Oftentimes, the first and most immediate change that you might notice while taking FloraThin is improved digestion. You may also notice several positive changes in your body, ranging from improved digestion and more energy, to improved mood and clearer skin.