Over the next 24 to 48 hours, you may experience minor, self-limiting symptoms as the medication clears your system: -Mild nausea or upset stomach -Dizziness or lightheadedness -Temporary spikes in anxiety or restlessness -Mild headache or drowsiness Do NOT take an extra dose of propranolol to "make up" for the mix-up unless explicitly directed by your doctor. Check your blood pressure and heart rate if you have a home monitor. Resume your normal schedule for your prescribed propranolol at your next scheduled dose. Contact your prescribing doctor or a local pharmacist to inform them of the mistake and ask exactly how to handle the missed propranolol dose based on your specific medical history.

Red Flag Warning: Seek immediate emergency medical care if you experience severe symptoms such as extreme dizziness, fainting, a dangerously slow or rapid heartbeat, severe muscle rigidity, high fever, or confusion. Separate your medications: To prevent this from happening again, store your old escitalopram in an entirely different cabinet, or safely dispose of leftover pills at a local pharmacy take-back program. Use a pill organizer: Labeling a weekly pillbox can help ensure you never accidentally grab an old prescription by mistake.