Yes, we know a spirulina producer here in France and found the quality to be very good. Hence our suggestion to Sabrina's mother, who checked with her doctor and decided not to use it based on his answer.
Many thanks for the Dispenza suggestion. Was aware of his work (have read 'Breaking the habit of being yourself' some years ago) but was not aware he was out there curing Parkinsons! Will definitely check this out. You are not the first person to mention him to me in recent days. So this must surely be a sign.