They check my thyroid fairly often and it's always fine. I don't eat much sugar, I'm on a nice healthy diet with wholegrains and so forth. Admittedly there's been a bit of a home-made chocolate spread situation since last night, but after the week I've had with this stairwell problem, I think I'm allowed. And lord knows that I've burned it off through all those stairs I had to climb while staying at a friend's. I'm surprised that I can still move, frankly. Normally that level of exertion would have had me flat out for weeks afterwards.

I'm meant to be taking salt, I need it for the POTS. Otherwise my blood pressure drops through the floor and I feel dreadful.

I thought you said earlier that I should take 5mg B12 since I'm vegan?

At the moment I've got the 800mcg tablets for the Metafolin, but cutting them into half and taking them every other day would be easier than what I'm doing now. If I keep on taking a 200mcg dose, I've got a year's supply of the stuff.

I've just worked out that my home-made electrolyte drink supplies about 1.8g sodium and 1.2g potassium a day, at least if I drink 2.5l of it. That's what I generally aim for, but I've been really thirsty and had more like 4l a couple of times since starting the B12.

I'm not on antiepileptics, nope. I had a dreadful time coming off gabapentin a year ago, and have been avoiding them ever since.

Judging from what I've heard about POTS and Florinef, water retention is actually a good thing. People with POTS tend to have low blood volume, so all that necking down of electrolyte drinks is with the aim of bringing the blood volume back up. And when I actually get to that specialist I've been trying to get referred to since August, I will hopefully get my blood volume tested. Until then, it's speculation.

I put on 3lb in the space of two weeks, while on a diet that should have had me losing 1/2lb a week (and I know I can diet successfully, I've done it before with no problems). Plus I stayed with a friend for a day, didn't get much salt or as much water as usual, and the next day my trousers were suddenly very loose on me. Hence noticing that I'm retaining water differently to what's usual for me.