It is okay to take metronidazole, also called methotrexate, for a short period of time. This drug is an antibacterial drug used to treat anaerobic infections and is often used to treat oral infections such as periodontitis or gynecological infections such as pelvic inflammatory disease. However, when there is chronic nephritis, although there are contraindications for many drugs, short-term use of these anti-infective antibacterial drugs is allowed because the infection itself is very damaging to the kidneys, and short-term use of metronidazole is allowed. This short-term refers to within 7 days, not more than 2 weeks are called short-term, short-term use of antibiotics or antibacterial drugs do not produce further kidney damage. Therefore, when there are indications for the use of these drugs can be used, do not worry.