Bifidobacterium bifidum can usually be taken by 70-year-olds, but the elderly need to be careful in taking medications, and it is recommended to follow the doctor’s instructions to take medications. Bifidobacterium bifidum is a western medicine name, common dosage form has bulk, capsule, etc., such as bifidobacterium bifidum quadruple live bacterial tablets, bifidobacterium triple live bacterial intestinal capsule and other medicines, belong to digestive drugs. Bifidobacterium bifidum is commonly used in the treatment of intestinal dysfunction caused by intestinal flora imbalance, such as acute and chronic diarrhea, constipation and so on. The adverse reaction of the drug is not clear, but for bifidobacteria allergy, can not be taken, allergic people should be careful to take. If there is a change in the nature of the drug, its use should be prohibited immediately. If the elderly are currently taking other drugs, they should ask their doctor before taking it to avoid the effects of drug interactions. If a 70-year-old person wants to take Bifidobacterium, it is recommended to ask the doctor first, follow the doctor’s instructions to take the medicine, and pay attention to whether the elderly have any adverse reactions after taking the medicine.