The recommended dosage for Metronidazole varies depending on the condition being treated:
For bacterial infections:
- Adults and children over 10 years: 800mg followed by 400mg every 8 hours for 7 days (duration may vary).
- Children under 10 years: Use a suitable alternative dosage form.
For anaerobic infections:
- Children 8 weeks-12 years: 20-30mg/kg/day, or 7.5mg/kg every 8 hours for 7 days, with possible dose increase to 40mg/kg based on infection severity.
- Children under 8 weeks: 15mg/kg/day as a single dose or divided every 12 hours.
- Children under 10 years: Use a suitable alternative dosage form.
For Trichomonas infection:
- Adults and adolescents: 2g as a single dose, or 200mg three times a day for 7 days, or 400mg twice a day for 5-7 days.
- Children under 10 years: 40mg/kg as a single dose, or 15-30mg/kg/day in 2-3 doses for 7 days. Maximum 2g/dose.
For non-specific genital infection in women:
- Women: 400mg twice daily for 7 days, or 2g as a single dose for 1 day.
- Adolescent girls: 400mg twice daily for 5-7 days, or 2g as a single dose.
For amoebiasis:
- Adults and children over 10 years: 400mg-800mg three times a day for 5-10 days.
- Children 7-10 years: 200mg-400mg three times a day for 5-10 days.
- Children 3-7 years: 100mg-200mg four times a day for 5-10 days.
- Children 1-3 years: 100mg-200mg three times daily for 5-10 days.
- Alternatively, 35-50mg/kg/day in 3 doses, not exceeding 2.4g/day.
- Children under 7 years: Use a suitable alternative dosage form.
For giardiasis:
- Adults and children over 10 years: 2g once daily for 3 days, or 400mg three times a day for 5 days, or 500mg twice daily for 7-10 days.
- Children 7-10 years: 1g once daily for 3 days.
- Children 3-7 years: 600mg-800mg once daily for 3 days.
- Children 1-3 years: 500mg once daily for 3 days.
- Alternatively, 15-40mg/kg/day in 2 or 3 doses.
- Children under 7 years: Use a suitable alternative dosage form.
For gum and teeth infections:
- Adults and children over 10 years: 200mg three times daily for 3-7 days.
For infected leg ulcers or pressure sores:
- Adults and children over 10 years: 400mg three times daily for 7 days.
For Helicobacter pylori-related stomach ulcers:
- Follow the doctor’s instructions, typically 1g 24 hours before surgery, then 400mg every 8 hours before the operation.
For surgery prevention:
- Adults: 1g as a single dose 24 hours before surgery, then 400mg every 8 hours.
- Children under 12 years: 20-30mg/kg as a single dose 1-2 hours before surgery.
- Newborns with gestational age less than 40 weeks: 10mg/kg as a single dose before surgery.
- Children under 10 years: Use a suitable alternative dosage form.
Important considerations:
- Elderly or liver disease patients: Follow doctor’s instructions carefully.
How to take: Swallow them whole with a glass of water, either during or after meals. Do not chew the tablets.
