Jude; It was surprising to see that you feel a change after only ONE DAY of taking SJW? All the literature I have read, and my own experience, tell me that it takes several weeks for it to build up in your system to the point wheer an effect is felt...how much time do you allow to elapse between stopping taking it and starting again? I have noted I can go up to a week after taking it for several months and start again and all is well; but if I let it go for two weeks or longer I need those three weeks for it to build up sufficiently...in fact am abiut to do so now because I have been off it for soem timne and will have a very stressful autumn semester coming up!