If I may. Venting.

[Warpy]

12. A vitamin D deficiency can cause a lot of things, fatigue is among them

It also exacerbates things like pain and memory issues. You won't feel a kick from supplements, but you'll very gradually start to feel a bit better.

I'm sorry the first guy you saw was so sloppy and unpleasant, but that drug might have gotten you through the transition period before the vitamin D kicks in. If the next guy suggests it, take it. Just watch your blood pressure to make sure you don't have to up those meds temporarily. Drugs suck but it's better than wrecking the car because you're out of celery.

Do get your D levels tested when you go back to the GP. The only documented toxicity on D was at prescription strength, a patient who didn't get his levels checked for one reason or another.