Why the label mentions 72 hours

The stop-use section ends with a time limit: stop and ask a doctor if the condition worsens or persists for 72 hours. Seventy-two hours is three days.

What it is telling you

Quell’s label covers dryness and irritation. If three days of using it as directed hasn’t settled things, or things are getting worse, the label’s answer isn’t more drops. It is a doctor.

Worsens or persists

Either one counts. Getting worse at any point is a reason to stop; so is the problem still being there after three days.

Counting the days

Count from when you started using it for the problem you have now. Noting the date on your phone takes a second and removes any guesswork later.

Not every reason waits three days

The rest of the stop-use section has no time limit attached. The full sentence is: Stop use and ask a doctor if you feel eye pain or changes in your vision, if irritation or redness continues, or if the condition worsens or persists for 72 hours.

The complete panel is on the Drug Facts page.