You're on the right track to think of potassium, so definitely look into supplementing somehow, either by taking it as a pill, or by using a salt-substitute such as Half-Salt or No-Salt, which you can buy in any grocery store.

Atkins doesn't really discuss fatigue while on Induction, only how much boundless energy you'll have. In Protein Power, the Eades are much more realistic. Fatigue is quite common in the early days and weeks of lowcarbing. Your body is getting rid of excess carbs and by-products of carb. metabolism; as well as switching into ketosis as you burn fat for fuel, but you already know that .... This is normal and will pass. The Eades are adamant about keeping potassium levels up too.

Some other suggestions -- are you taking a good multi-vitamin-mineral supplement every day? Might be a good idea. Look especially that it provides at least 50 mg each of the major B-vitamins. Most of the better quality once-daily formulas are fine. Look for "forte" or "super" or "stress formula" types, such as Centrum Forte, Jamieson Super, etc....

Extra Calcium and Magnesium are important too. Calcium especially for women, but magnesium is MUSCLE food. Very important. You can get Cal-Mag as a single supplement, 1 : 1 ratio is best, and take it twice a day ......... the second dose in the evening before bedtime.

The other thing that comes to mind is protein intake. Try to have some protein every couple of hours during the day. A hard-boiled egg, piece of cheese or a small handful of nuts (watch the carbs though), a slice of cold meat, etc........ or a lowcarb, hi-protein shake.

Sounds as though you're doing great otherwise!! Way to go! Take care, and happy lowcarbing.

Doreen