Lack of energy
Sounds like you have tried everything. You don't really talk about your eating. Have you tried eating every 3 hours, small meals throughout the day instead of eating larger meals. You could have a sugar problem too, and no single blood test will tell you that, you need special testing for that. I take a ton of vitamins, and each day I feel better. I don't take any "special" pills or drink to feel better, but try to eat several times a day, keep my sugar level up and make sure I take all my vitamins. I found it funny you mentioned a diet pill. Stuff like that doesn't do any good for anyone. It's just a quick boost, because of whatever they might have in them to boost your energy at the time and then you get a drop. Sounds like no one really has any good ideas for you, sounds like everyone has tried. Hope you find maybe a better doctor that will give you an answer to your problem. I know if I can't get a doctor to help me, I will look for one that will, because feeling like you feel isn't normal, even for a weight loss surgery patient.
You are so smart. I never even thought of the sugar thing. That could absolutely be Deb's problem. Hypoglycemia. And without a glucose tolerance test, the doctors wouldn't know it. See, that's why I love ya. You are just a smart cookie. I think we need a rematch at Wii. I need to kick some "bootay". Those guys think they are all so good.
Love ya
Your primary will send you to a lab most likely. The glucose tolerance test takes like 4 hours. They take blood from you, then make you drink this yucky stuff and then once an hour for 4 hours they take more blood.
As for correcting it, the only way I know of for correcting it is through diet. So try the diet thing and see if that helps. I'm sure if you google hypoglycemia you can find the diet that is recommended for treating it. It certainly couldn't hurt.
Good luck and keep us posted.