@Tylers73 I had to think about your question overnight.
There are so many causes of feeling run down. When was the last time your doctor checked your thyroid? checked you for anemia? checked your B12 and iron levels? checked you vitamin D levels? Also, do you have a hard time digesting food? Do you have chronic problems with constipation or loose stools?
A good place to start is to see your doctor for consultation and lab work.
All that said, taking a few vitamins can help you feel better if you're feeling badly due to eating a diet poor in whole plant foods. Once you're feeling better you can focus on improving the quality of your diet. But sometimes diet's not the problem, rather it's your bodies inability to properly digest and absorb the nutrients from the food you're eating.
A good place to start is to take a good quality multivitamin, and B-complex.
If you decide to take vitamin D, something most if not all diabetics should do preferably by checking your D level first, I agree with Kevin, it's important to also take vitamin D3's partners, vitamin A (cod liver oil), vitamin D3, vitamin K2, and I'd add magnesium citrate or better.
D3 plays an important role in managing inflammation, which is important for everyone, not just those with diabetes.
The problem is that when we take vitamin D3, calcium levels in the blood can increase so you want to take vitamin K2 to keep the calcium out of the soft tissues such as you arteries and kidneys and back into your teeth and bones where it's best stored for use by the body as needed. The vitamin A and magnesium also helps with this process.
The reason maintaining adequate levels of magnesium is so important is because unless you're eating a heavy whole foods plant based diet, it's unlikely you're getting enough magnesium from your diet. Magnesium is involved in almost 300 processes in the human body. It's a critical mineral that the body needs.
To that list I'd add fish oil. If you're depressed for any reason, fish oil will help your brain work better if you give it enough time. I was taught many years ago that fish oil reduces symptoms of both depression, anxiety, and other serious mental illnesses.
I'm so sorry to hear you're feeling so unwell. I hope your doctor is taking your symptoms seriously. Sounds like your health is in a downward spiral. Vitamins may give you enough of a boost to get you headed back in the right direction.
Having diabetes isn't in anyway your fault. It happens. It gets easier to manage with education and ongoing support.
Edited by a mod to remove incorrect information