You will think I am crazy if I tell the truth. The truth is that I noticed a change in a matter of minutes. Since I only take Nurtec as needed for vision problems, it was my third pill about 2 weeks later where my vision seemed perfect. And that varies now between much improved and supernaturally bright and perfect. I should say that I have two lenses from cataract surgery, one European and one American, very different lenses but both obviously work well under the right conditions. I have not had the usual visual disturbances for about a week, and the doc wants me to take more Nurtec.

Whatever you decide, I wish you well. This is a powerful drug for some of us. Not to be dismissed IMO without trying if your vision causes you distress.