Can I eat fermented soybean products after intravenous penicillin infusion?

Generally, it is safe to eat fermented tofu (dòuzhāng) after receiving intravenous penicillin, as it does not affect the drug's efficacy. However, consumption should be moderate. Fermented tofu is rich in protein and may be difficult for the body to break down and utilize. After intravenous penicillin administration, alcohol should be avoided, along with spicy, irritating foods and allergenic or "heat-inducing" foods that may trigger allergic reactions. Below is a detailed explanation:

Intravenous penicillin treatment usually indicates the patient has an infection. During infection, excessive intake of protein-rich foods may overwhelm the digestive system, leading to indigestion symptoms such as abdominal pain, bloating, belching, loss of appetite, and bad breath. Therefore, such foods should be consumed in moderation. Alcohol must be avoided after penicillin infusion, as well as spicy, irritating foods and common allergens, to prevent adverse drug reactions such as skin redness, swelling, itching, and chest tightness.

After receiving intravenous penicillin, patients should avoid any factors that irritate the skin, such as strong alkaline soaps or bathing with excessively hot water. It is advisable to consume more fresh vegetables to maintain a balanced diet. Penicillin should not be administered when the patient is hungry or on an empty stomach, as this may increase the risk of fainting or needle-related dizziness.