Wondering if there are those out there that feel the SMP made you worse. Not only did it not help you but you are now worse off then when you started? I feel I have been slowly getting worse since I stopped again about 4 weeks ago and not sure what to do about it.
It could actually be working, but you may be experiencing metal detox which will make you feel worse. This is why Rich suggested doing the HDRI Methylation Panel before and during treatment so you can get a functional picture of your methylation cycle. If the markers are getting better, but you're feeling worse, it's detox.
Assuming you haven't done this, I would suggest stopping until you feel better, then restart at a much lower dose that you can tolerate without feeling worse.
ps. you said you stopped a long time ago, but you're still feeling worse and worse. This suggests the methylation cycle is still spinning and you're still detoxing. In that case, I suggest using 50-100mcg of the nicotinic acid form of niacin to soak up methyl groups and stop methylation. Watch Methylation Made Easy Video #3 - Treatment - the link's in my signature.
pps. can you describe what symptoms "worse" is? My metal detox symptoms from methylation are: more tired than usual and flu-like aching of muscles and joints. This is different from say magnesium deficiency which is heart palps, twitching muscles, poor sleep (due to being wakened by twitching feet). I don't have potassium deficiency so can't comment on that.