Hey, great to have you on board snowblind.
I've tried PS but the cost in my country is so expensive that I'd be spending over $8 a day if I was to get 1g of soy-derived PS. I gave it up and added some lecithin instead. 7-keto is much cheaper & it's one of the few things I can still import here.
How much ginkgo are you taking?
I've noticed that stopping ginkgo for any more than 2 days gives me POIS symptoms again so I know it's having an effect.
Daveman: It's difficult to separate prolactin and catecholamine effects. Much of the symptoms we describe are similar to mysterious illnesses like fibromyalgia which appear to target the HPA (Hypothalamus, Pituitary, Adrenal) pathway. In terms of causes, we couldn't discount hormonal imbalances, tumours, so many things. Different POIS sufferers could have different causes. It's not possible to say it's neurotransmitters or it's just hormones. Everything is connected.
Imagine that POIS sufferers produced a prolactin surge after an O that's much more powerful than normal OR that our dopamine levels were too low to begin with OR that our dopamine receptor levels were too low. Having lower than average dopamine receptor levels in some parts of the brain is not necessarily a bad thing. It depends on the levels of receptors and other factors. These can be the difference between creative genius and schizophrenia.
http://www.sciencedaily.com/releases/2010/05/100518064610.htmAnyway, prolactin increases in these circumstances would be like shutting off the dopamine tap in your brain. Prolactin is released to protect the brain from too much dopamine released during an O. But what if there was too little to start with or somehow the dopamine release isn't high enough OR too much dopamine gets converted into norepinephrine. All these things could have similar effects. Too little dopamine floating around following an O.
Dopamine helps orchestrate the interworking between the different parts of your brain required for cognition. It's not just a "pleasure" neurotransmitter. One of the symptoms I've noticed with POIS is that the ability to concentrate and focus on something disappears. It's such a curious symptom. I can still remember the first time it happened. I felt in shock. It made no sense. Instead of focus there's chatter and it feels like you cannot control your thoughts.
This led me to the conclusion that POIS, for me anyway, can bring about schizophrenic like symptoms if not treated and I think the reason is dopamine levels.
240mg of ginkgo appears to counteract much of this for me. P5P/b6 also reduces prolactin secretion. Vitex (as snow-blind has said) is an effective prolactin secretion inhibitor. Taking things which boost dopamine will oppose prolactin and reduce levels.
Taking hormones which oppose oestrogen and hence prolactin secretion may also work. e.g. DHEA, 7-keto DHEA, Pregnenolone, Progesterone (complex effect here - both raises and lowers levels) and of course Testosterone. Too much of either and there's a problem of conversion between hormones known as aromatisation.
See
http://en.wikipedia.org/wiki/Aromatase