Sakiv46, after discussing this with the pharmacy's Dr. Schatten on the phone, I had my doc write the rx for "enterically coated lecithin, 2 grams, 3 x per day" plus the amount of supply requested (6 months in my case). The rx is apparently required to facilitate non-rejection by US customs.
Kate- regarding cost, it is currently 26 euros per 50 grams, with the normal dosage being 3 x 2 gram capsules a day in accordance with the study dosages, i.e. 6 grams per day. So for example a 3 month's supply would thus be 30 x 3 6 = 540 grams. For every 500 grams, one gets a bonus of 50 grams free, so a 500 gram order yields 550 grams, meaning that for 260 euros (I think a little over $350) one gets a 3 month supply. Clear as mud? Actually works out similar to the expensive probiotics that i currently take.