Calcium tablets mainly depend on what kind of drugs are taken orally together, some drugs cannot be taken together with calcium tablets, otherwise it will lead to calcium loss or deposition. There are many kinds of common drugs, such as vitamins, folic acid, antihypertensive drugs, anti-inflammatory drugs and cold treatment drugs. Some drugs can be taken at the same time as calcium tablets, such as blood pressure drugs, such as amlodipine and nifedipine controlled-release tablets, which can be taken together with calcium tablets as long as the blood pressure can be controlled within the normal range. Folic acid is a water-soluble vitamin that can replenish the raw materials for blood production. During pregnancy, folic acid can be taken together with calcium tablets to prevent physiological defects in the fetus and will not have any effect.