I have been taking citalopram for 1 week and I am still experiencing side effects. Is this normal?

Yes, it is normal to experience side effects when starting a new medication like citalopram. Side effects such as fatigue, headaches, and nausea are common but usually improve over time as your body adjusts to the medication. If the side effects persist or become too bothersome, you should consult with your pharmacist or doctor about potentially adjusting the dosage. It's important to keep your healthcare provider informed and closely monitor your progress while taking the medication.