How long does it take for a man to see the effect of oysters is not strictly regulated in the clinic, due to each patient’s own condition and physique is different, the time to see the effect varies from person to person, it is recommended to use under the guidance of the doctor. Oyster has the effects of tranquilizing the mind (using ores and shellfish to stabilize the mind), submerging yang and tonifying yin, and softening and dispersing knots (softening and dispersing hard lumps). Oyster can treat palpitations and insomnia, mass in the abdomen, lumps, scrofula, phlegm and nucleus, dizziness and tinnitus. Calcined oyster has the efficacy of astringency (astringent consolidation), acid suppression and pain relief (suppressing gastric acid and alleviating pain). It is used for spontaneous sweating (involuntary sweating during the day, aggravated by sweating with slight movement), night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), menstrual leakage (excessive menstrual flow or more than a few drops), and acid swallowing (swallowing the acid that goes up to the oropharynx in the stomach). People who are allergic to oysters are forbidden to use oysters. People with cold spleen and stomach (weak and cold spleen and stomach) also need to be cautious of using oysters. Oysters are prone to cause constipation and indigestion if taken more than once for a long time.