I have been on Synthroid 125mg for 8 yrs. Just switched to Thyroid-S 5 days ago. I take one half of a 65mg pill in the morning and again in the afternoon, about 6-8 hours apart. I've never had much energy all these yrs, but I get a little boost of energy after taking half of the Thyroid-S, but seems I feel a crash and burn effect before my next dose, feel that I need a nap, or I just fall asleep in my chair. I'm sleeping real hard at night, and much longer than I used to while on Synthroid. I'm wondering...Am I not taking enough of the Thyroid-S to start with? Is it too soon to raise it a bit?