It is very important to tell your doctor how you feel things are going during the first few weeks after you start taking fluphenazine . It will probably take several weeks to see big enough changes in your symptoms to decide if fluphenazine is the right medication for you. If you take the fluphenazine long-acting injection, it will take a few days before fluphenazine is fully absorbed and at an adequate level to begin treating your symptoms. After starting fluphenazine long-acting injection for the first time, or re-starting after a time of no medication, your provider may also have you take fluphenazine tablets for a few days.
Side effects that may go away during treatment, include drowsiness, dizziness, nasal congestion, blurred vision, dry mouth, or constipation. If they continue or are bothersome, check with your doctor. CHECK WITH YOUR DOCTOR AS SOON AS POSSIBLE if you experience changes in vision; changes in breasts; changes in menstrual period; sore throat; inability to move eyes; muscle spasms of face, neck, or back; difficulty swallowing; mask-like face; tremors of hands; restlessness; tension in legs; shuffling walk or stiff arms or legs; puffing of cheeks; lip smacking or puckering; twitching or twisting movements; or weakness of arms or legs.