Use it as soon as you notice. If it is close to the time of your next dose, skip the missed dose and resume your dosing schedule.
Do not use an extra dose to make up for a missed dose.
If you are repeatedly missing doses, deliberate setting an alarm or ask a family member to remind you.
Consult your doctor to discuss changes in your dosing agenda or a new agenda to make up for missed doses if you have overlooked or missed too many doses recently.