Elavil is a multivitamin tablet, and there are side effects of taking multivitamin tablets all through pregnancy. Gastrointestinal disturbances, such as constipation, may occur in a few patients who take it, and there is usually no need to stop the medication. Sensitive women may experience some degree of hyperarousal while taking it, so patients taking it should avoid taking it in the evening. Multivitamin tablets are often used in pregnancy and lactation to provide additional vitamins, minerals and trace elements; this medication also prevents anemia due to iron and folate deficiency during pregnancy. It should be noted that hypervitaminosis A, hypervitaminosis D, hypercalcemia, hypercalciuria is prohibited. Renal insufficiency, iron accumulation, iron utilization disorders are prohibited. It is contraindicated for those who are allergic to this product, and should be used with caution in allergic individuals and children. Drug interactions may occur if used concurrently with other drugs, please consult your physician or pharmacist for details. Patients should not buy and take medicines on their own, it is recommended to go to a regular medical institution and under the guidance of the doctor reasonable use of drugs to avoid adverse reactions.