So I am on day four of the IP diet and have suffered such bad headaches for the past two days that last night it woke me up twice, I try drinking water with salt in it and it does help, but I feel like all I'm doing is drinking salty water and sprinkling so much salt on my food that thats all I can taste! any help will be much appreciated!

Ketosis and withdrawal from carbs and caffeine will cause headaches the first week, but they should subside by the end of the week. If they don't, then you need to look for other causes. For me, it was the artificial sweeteners in some of the packets that caused headaches. I ditched those and feel much better.

Track your symptoms and see if they increase with certain packets.

I had killer headaches for about 3 days, mostly in the evening and overnight. I'm in the middle of my second week and they seem to be gone now. Hang in there!

thanks for the info, no headache today but I'll track the packets i use, thanks

I took extra strength Tylenol and I had 2 potassium vitamins (instead of one). It helped me.

I hope you feel better soon.

I also had killer headaches because I went from having 12 oz of coffee in the morning, to 6 (so I wouldn't have to drink as much water to compensate :P). Do you normally drink any caffeinated beverages, and if so, have you decreased the amount? That's just another thought, aside from what I call, "carb detox."

It WILL stop though, even as early as tomorrow. And you will feel better than you have in years.

Since I was a diet coke drinker, I seriously had to take excedrin migraine for the first few days of this diet, as I was going through withdrawls from everything... It gets better, and don't cheat, or the headaches will come back. (speaking from experience)

Hope you feel better!! I had horrible headaches for the first 3 days. I felt like a junkie trying to get off crack. Hang in there~ it's worth it!