Reddit mentions of Amazon Brand - Solimo Vitamin D3 50 mcg (2000 IU), 365 Softgels, Value Size - One Year Supply, Supports Strong Bones and Immune Health

Vitamin D-only is probably best, or at least most cost-effective. Most people get enough of most vitamins and minerals from their diet, so supplementing everything else is a waste of money at best. Many multivitamins also contain D2 instead of D3, which is your body's preferred and more effective form. Vitamin D3 supplements are very inexpensive.

Edit: If you're already taking daily multivitamins, you probably don't need to add an additional D supplement. (But you might consider dropping the multi in favor of targeted supplementation.) But if you're not on a multi, consider a D3-only supplement.

Um, most brands, as far as my experience has been.

This is what I take for vitamin D: Amazon Brand - Solimo Vitamin D3 50 mcg (2000 IU), 365 Softgels, Value Size - One Year Supply https://www.amazon.com/dp/B079C83Z3L/ref=cm_sw_r_cp_api_i_evh2Cb25147Z8

Natures Bounty Vitamin B-12 1000 Mcg Tablets, Value Size - 200 Ea https://www.amazon.com/dp/B00DYSUQR2/ref=cm_sw_r_cp_api_i_0wh2CbSESDK0B

NAD - Same issue here though (~9months ago. Took about 2-4 weeks to start feeling symptoms secede. Now I'm healed up and energy is back, + no joint pain!)

Dr. Told me to take Vit-D supps, around 4000IU/day until levels are normal and then keep taking 2000IU/day.

IMPORTANT: Vit-D is Fat soluble. This means three things:

1. Be sure to take it with food that has fat, e.g.: eggs, most meats (that are not super lean like Chicken or Turkey Breast), cheese, nuts, seeds, greek yogurt, cottage cheese, etc....
   
   
2. Fat soluble vitamins are stored in your fat and therefore you can have too much, so be careful. In the case of Vitamin D it takes a lot for it to be too much. Like 50,000IU/Day for weeks. So don't worry to much but still note this.
   
   
3. Vit-D is a fat-soluble vitamin, so if you miss a couple fo days of taking it, it's not a big deal. Your body can use the existing Vit-D that's been stored in your fat. What I usually do, if I know that I'm going somewhere for a couple days and I'm not going to have vitamin D on hand, is to take extra (like 8000IU/day) for like 3 or 4 days prior.
   
   The supplement is really cheap (~$6 for 1 yr supply):
   
   Amazon Brand - Solimo Vitamin D3 50 mcg (2000 IU), 365 Softgels, Value Size - One Year Supply https://www.amazon.com/dp/B079C83Z3L/ref=cm_sw_r_cp_apa_i_3OtRDb8JAB41W

Please put this on your wish list STAT

give them a bottle of this and go about your business