Help #3: Water
It's very important to stay hydrated when dealing with POTS/dysautonomia. When you struggle with low blood pressure and high heart rate like I do, having water on hand constantly is essential.
Why drink smartwater? Smartwater is purified water and contains electrolytes - potassium, calcium, and magnesium. Granted, the small amounts of these electrolytes aren't going to replenish the body like a sports drink. However, smartwater contains no sugar or dye, has a fresh, clean taste, and is vapor distilled to eliminate contaminants that are found in tap water.
Personally, if I am going to have to drink water constantly, I want it to be safe and to taste good. I also want it to be easily portable. I take these bottles with me everywhere. Since the environment is a concern, it's important to note that the bottles are recyclable and reusable.
I've been drinking smartwater since my doctor recommended it years ago, and it has definitely been worth the investment (about $1 per liter) in terms of taste, portability, and health benefits.