I am 27 years old and suffering from severe social anxiety disorder for the last 4 years.I take 40mg propranolol (inderal) daily to control the symptoms. I have always had mild ADHD but now its become intolerable.I haven't been able to study even one chapter of any of my course books since the last 8 months. I am planning to start methylphenidate (Ritalin sold as inspiral or addwize here). Can anyone tell me if it is safe to mix the two.

Inderal is a beta blocker that diminishes the effects of epinephrine on B2 receptors in lungs, gastrointestinal tract, liver, uterus, vascular smooth muscle, and skeletal muscle while Ritalin increases the levels of dopamine and norepinephrine in the brain.
My psychiatrist is not a very helpful person and I feel he will dismiss my ADHD problem. I had to myself increase the inderal dose to 40mg coz he was willing to prescribe only 10mg which was useless.The 40mg Inderal gives me a headache. So I am a bit scared to add Ritalin (Inspiral) to it.
Can anyone help?