The maximum dose of propranolol for anxiety depends on the individual and their specific needs. The right dosage will depend on why you need it in the first place, and your doctor or pharmacist will be able to help you with the correct dosage. The usual starting dose for anxiety is 40mg once daily, but your doctor may prescribe a lower dose to start. If you find that 10mg is not alleviating your anxiety symptoms, you can increase your dosage to as many as four 10mg tablets before an event. You can also take this Propranolol dose for anxiety up to three times a day. Doctors tend to prescribe 10-20 mg of Propranolol as an off-label prescription to be taken an hour before a big moment, such as a presentation, job interview, or crucial exam. The maximum dose of propranolol for other conditions, such as high blood pressure, chest pain, or migraines, can range from 120mg to 640mg per day, depending on the condition. It is important to follow your doctors instructions and not exceed the recommended dose.