Id say it would be that long, I stopped taking it myself ( cant see the rheumy till december) cant take leuflonamide because of the liver. so I am not on anything and in the short month or so I have been off it Ive noticed a difference. but my eyesight sheesh , just had new glasses ( multifocals) and they are not what they were when I had the eye test ( or should I say my eyesight isnt).