Symptomatic Uncomplicated Diverticular Disease (SUDD) is the most common clinical form of Diverticular Disease (DD). The therapy should be aimed at reducing both the intensity and frequency of symptoms as well as preventing complications. The pharmacological treatments include fibers, not absorbable antibiotics (for example rifaximin), anti-inflammatory drugs (for example 5-amino-salycilic acid) and probiotics, alone or in combination with other drugs. Although some of these treatments seem to be effective in treating SUDD, but their efficacy in preventing complications of the disease is still uncertain. It has been hypothesized that microbial imbalance associated with bacterial overgrowth of the colon, may be the key to the development of diverticular disease (DD). Therefore, drugs that can manipulate gut microbiota such as probiotics or rifaximine are considered as a potential key therapy. Rifaximine is able to modulate the intestinal ecosystem, restoring eubiosis. Traditionally, DD of the colon is thought to be related to low grade of inflammation. By analogy with other inflammatory bowel diseases mesalazine has been studied also in DD. There are several evidences that may support the use of mesalazine in the SUDD. Unfortunately, mesalazine cannot be used to prevent diverticulitis because of the paucity of high-quality studies. Currently, mesalazine has a limited place for the management of SUDD. In SUDD probiotics have been proven as an effective therapy in reducing abdominal symptoms, but unfortunately there has been limited number of relevant studies regarding efficacy of this therapy.