Hi Doctor, I Recieved Smart Pills Off The Internet Yesterday

Hi doctor, i recieved smart pills off the internet yesterday called synapsyl, And i took the daily dose (2 tablets) And when i went to bed last night my heart started racing And i was getting panicky and couldnt breath, all symtoms i never get.

And now tonight same thing, Fell asleep and woke up gasping for air like there was a pillow over my face, And heart racing.

Please tell me if this is dangerous And if it will have a long lasting affect or not.

I wont Be using them again.