i had a similar experience i suddenly became Psychic one day and they diagnosed me with schizophrenia.
the pills couldn't "kill me" I'm still psychic, just go off the meds and it will return slowly.. its poison you've been taking.
you don't have ADHD, you are an indigo.
Remember that you are the power and creator of your life and try to avoid harmful pills, or pills in general as they are usually harmful.
I believe that you may be feeling shut down because your pineal gland must be calcified because of the pills. I believe this is how those pills work, by calcifying and "closing" your doors of perception. You can go back to normal by detoxing yourself. I believe that when it happens, you will recover your creativity and your skills as well as find new ones.
Also you could try some binaural audios on Youtube for decalcifying or stimulating your pineal gland / third eye.