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Botox

Botox Dosage

Kristianne Hannemann, PharmDDaisy Chau, PharmD
Reviewed by Kristianne Hannemann, PharmD, Daisy Chau, PharmD
Last reviewed on August 1, 2025

The average cost for 1 vial of 100 units of Botox is $649.63 with a free GoodRx coupon. This is 14.97% off the average retail price of $764.02.

vialVial

Dosage

Quantity

Price as low as

Price per unit

100 units

1 vial

$649.63

$649.63

200 units

1 vial

$1,290.22

$1,290.22

Typical dosage for Botox

Botox (onabotulinumtoxinA) is only available as an injection that's administered by a healthcare professional. The dose and number of injection sites will depend on the condition you have.

Adults:

  • Overactive bladder: The total dose is 100 units.
  • Loss of bladder control: The total dose is 200 units.
  • Chronic migraine: The total dose is 155 units.
  • Muscle spasms:
    • In the arms: The total dose is between 75 units to 400 units.
    • In the legs: The total dose is between 300 units to 400 units.
  • Neck muscle spasms: The recommended dose is between 198 units to 300 units.
  • Excessive armpit sweating: The total dose is 50 units per armpit.
  • Eyelid twitching: The total starting dose is between 1.25 units to 2.5 units per muscle.
  • Crossed eyes: The total starting dose is between 1.25 units to 2.5 units per muscle.

Children:

  • Nerve-related bladder problem:
    • Weight 34 kg (75 lbs) or more: The total dose is 200 units.
    • Weight less than 34 kg (75 lbs): The total dose is 6 units/kg.
  • Muscle spasms:
    • In the arms: The total dose is between 3 units/kg to 6 units/kg (maximum 200 units).
    • In the legs: The total dose is between 4 units/kg to 8 units/kg (maximum 300 units).
  • Eyelid twitching: The total starting dose is between 1.25 units to 2.5 units per muscle.
  • Crossed eyes: The total starting dose is between 1.25 units to 2.5 units per muscle.
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