In this article, we will be taking a look at the 15 Best Biotech Penny Stocks to Invest in Right Now. Entero Therapeutics, Inc. is included in them. Entero Therapeutics, Inc. (NASDAQ:ENTO) is a clinical-stage biopharmaceutical company developing targeted, non-systemic therapies for gastrointestinal disorders, including celiac disease, gastroparesis, and pancreatic insufficiency. The company has recently drawn attention as a biotech penny stock due to key developments in September 2025. A major change in ...