So sorry that is happening to you. I had a stimulating response to phosphatidyl serine when I tried it too. The first two nights I got sleepy then next two night I was way over stimulated. People have different reactions to it sometimes.
Also phosphatidyl serine plays a role in detox in that it assists in supporting cellular chemical signal transmissions, activating cell surface receptors and cellular exchange of nutrients and waste products. I think sometimes an adverse reaction is actually a detox reaction. With AF our bodies abilities to detox affectingly slows down. The toxins get stored while body is busy trying to keep your most important functions going. Along comes the right supplements and bam you got herx reactions like crazy. They are no fun and they suck big time.