Antibiotics Home > More Information on Plaquenil

What If I Take an Overdose?

People who take an overdose of Plaquenil may experience effects such as, but not limited to:
  • Headaches
  • Drowsiness
  • Vision changes
  • Seizures
  • Cardiac arrest
  • An irregular heart rhythm (arrhythmia)
  • Loss of life.
If you happen to overdose on Plaquenil, seek medical attention immediately.
(Click Plaquenil Overdose for more information.)

What Should I Do If I Miss a Dose?

If you do not take your Plaquenil as scheduled, take your missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take a double dose. Try not to miss doses, as this may significantly decrease the effectiveness of the medication (especially when used for malaria). If you are not sure what to do if you miss a dose, contact your healthcare provider.


This medication is available in one strength -- Plaquenil 200 mg tablets.

Storage Methods

Plaquenil should be stored at room temperature, away from moisture and heat. It should be stored in an airtight container. Keep this and all other medications out of the reach of children. Even a relatively small accidental overdose of Plaquenil can be lethal in children.

Generic Availability

Currently, Plaquenil is available in generic form.
(Click Generic Plaquenil for more information.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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