Yes, it is entirely safe to continue taking Folinext, which contains folic acid, for over a year. Folic acid is a water-soluble B-vitamin, meaning your body naturally eliminates any excess, making long-term daily use safe and well-tolerated. Continuing your supplement now is actually very beneficial, as building up your folate reserves before conception is the best way to support a healthy future pregnancy. You are doing a wonderful job planning ahead! I suggest discussing your timeline with your doctor during your next routine visit to ensure your wellness plan is fully aligned with your goals.