no, they are safe to take for the rest of your life
In the past we could only rely on our experience which was suggestive of safety but hardly proof. We do now have the scientific evidence to show long term safety. At last year's CADDRA meeting, one researcher was able to show us that long term stimulant use does not lead to premature death, or heart attacks, something we had worried about in the past. This evidence is based on 30 years of detailed records collected in Norway which has a centralized medical record system, and surprisingly, in the US, where health insurance companies keep detailed records of outcomes. Kiaser Permanente existed 40 years ago and we can follow patients long term cz-lekarna.com.