Skip to main content
Ethambutol

Ethambutol Dosage

Allison Gourley, PharmDCydnee Ng, PharmD
Reviewed by Allison Gourley, PharmD, Cydnee Ng, PharmD
Last reviewed on February 25, 2025

The average cost for 60 tablets of 400mg of Ethambutol is $22.12 with a free GoodRx coupon. This is 74.98% off the average retail price of $88.41.

tabletTablet

Dosage

Quantity

Price as low as

Price per unit

100mg

90 tablets

$22.09

$0.25

400mg

60 tablets

$22.12

$0.37

Avg retail price
$62.22(Save 64.50%)
GoodRx discount
$22.09
How it works
drug-savings-illustration-1Use GoodRx to find medications, pharmacies, and discounts.
drug-savings-illustration-2GoodRx discounts can help you pay less for your prescription.
drug-savings-illustration-3Bring your free coupon or savings card to the pharmacy.

Typical dosage for Ethambutol

The dose will depend on your body weight.

  • First-time treatment of TB: The typical dose is 15 mg/kg (equal to about 7 mg/lb) by mouth once every 24 hours.
  • Repeat treatment of TB: The typical dose is 25 mg/kg (equal to about 11 mg/lb) by mouth once every 24 hours for 60 days. After 60 days, your dose will be lowered to 15 mg/kg (equal to about 7 mg/lb) once every 24 hours.

Follow your prescriber's instructions on how often to take Ethambutol each week and how long your treatment is. This can depend on your specific treatment plan.

Your dose might also differ if you have kidney problems.

why trust our exports reliability shield

Why trust our experts?

Allison Gourley, PharmD, is a kidney and pancreas transplant pharmacist at a teaching hospital in the San Francisco Bay Area. When she’s not educating patients about their immunosuppressants, she's actively involved in transplant research.
Cydnee Ng, PharmD
Reviewed by:
Cydnee Ng, PharmD
Cydnee Ng, PharmD, is a licensed pharmacist in California. After getting licensed in 2019, she began her pharmacy career as a community pharmacist at Walgreens.

Was this page helpful?