Oil

　　Animal fats, such as lard, mutton fat, and chicken fat, can increase fat storage in the body after consumption, reducing the effectiveness of certain lipid-lowering drugs. If taking lipid-lowering medications, avoid animal fats and consume vegetable oils instead. Furthermore, it is not advisable to take iron supplements (such as ferrous sulfate and ferrous fumarate) when consuming large amounts of animal or vegetable oils. This is because fats can inhibit gastric acid secretion, thereby reducing iron absorption in the gastrointestinal tract. Most anthelmintic drugs are fat-soluble and only exert local therapeutic effects in the intestines. Excessive intake of fat-rich foods can promote the absorption of anthelmintic drugs, increasing their toxicity and reducing their efficacy.

　　soy sauce

　　Soy sauce contains abundant metal ions, which can easily combine with antibiotics such as tetracyclines to form compounds that are poorly absorbed by the gastrointestinal tract, significantly reducing its antibacterial effect. Furthermore, soy sauce should be avoided when taking medications such as phenoxybenzamine (e.g., vasectomycin) to treat cardiovascular diseases, as it may cause side effects such as nausea and vomiting.

　　Salt

　　Salt can reduce the effectiveness of antihypertensive drugs, diuretics, and corticosteroids. Patients taking these medications should minimize their salt intake and maintain a light diet. When taking sodium salicylate for treating rheumatism, it is also important to be mindful of salt intake; otherwise, excessive sodium can trigger or worsen congestive heart failure.

　　vinegar

　　Vinegar is an acidic condiment and should not be taken with alkaline medications, such as antacids like Gaviscon and Maalox. These medications mainly consist of alkaline substances like sodium bicarbonate, calcium carbonate, and aluminum hydroxide. Consuming acidic foods like vinegar before or after taking medication can easily cause a neutralization reaction, negating the medication's effectiveness. Vinegar can also directly irritate the stomach lining. Furthermore, weakly alkaline antibiotics like erythromycin and gentamicin are easily degraded or poorly dissolved in an acidic environment, affecting absorption.

　　MSG

　　Medications are generally excreted through the kidneys. Monosodium glutamate (MSG) contains a large amount of amino acids; taking it concurrently can increase the burden on the kidneys. Special caution should be taken when taking diuretics or corticosteroids.

　　sugar

　　Sugar should not be taken simultaneously with traditional Chinese medicine decoctions, as it can affect the efficacy of some antipyretics and interfere with the absorption of minerals and vitamins. Furthermore, the proteins and tannins in traditional Chinese medicine can react chemically with sugar, causing some of the active ingredients in the medicine to coagulate, denature, become cloudy, or precipitate, which can then pose certain health risks.

　　liquor

　　Avoid drinking alcohol while taking most medications; even cooking wine can increase the risk of dangerous events. Alcohol can cause vasodilation, and when used with antihypertensive drugs (such as reserpine and nifedipine), it can easily lead to hypotension, which can be life-threatening in severe cases. Alcohol can also enhance the effects of hypoglycemic drugs, causing hypoglycemia.

　　Therefore, if you are taking medication, you must not consume seasonings indiscriminately. Even if you must, it is best to wait one or two hours before consuming them.