Was doing an hcg diet and was not getting the results I was expecting. I followed orders and tested my system and the hcg I was given from partell. I went to partell spoke with the pharmacist Eric and was basically told I didn't follow directions and the product was used. Said there was nothing he can do to help me where the hcg was bad. I was told it's always good and checked it was my error. I felt he was not professional to me and in a nice way called a liar and wouldn't work with me or test what was not finished to base my conclusion of bad hcg. Told me if not opened he can exchange but three bottles and the last no results? Nothing I can do? A mistake could have been made in one of the bottles.