B-50 Complex is a common formula. Any major brand is OK with me. Nothing on the vitamins regimen is a high dose. They may be compared to the useless RDA/DA numbers on the labels. The RDA/DA amounts are the minimums to maintain health, not a therapeutic level to help with stresses to body systems.

Niacin is a B vitamin. It helps capillary blood flow and is good for nerve tissue inflammation.

The brain needs adequate magnesium with calcium so it can be properly used. Magnesium helps with sleep cycles among other things.

C and E should be added as individual doses. Not many multi's have enough of either. D3 is rarely in the amounts needed, especially during the winter months or for those living in the higher latitudes. It is not uncommon for a D3 dose to be 2500 or even 5000 IU's. Your 500 is a bare minimum.

Very few vitamins and supplements can be overdosed unless you are taking extra Vitamin A. Vitamin C will cause loose bowels before it will cause any other problems. This is called bowel tolerance. It takes most people a minimum of 3 grams a day (1 gram 3 times a day) to start to see this effect. The 400 IU's of E is a common dose.

There is no measurable increased stroke risk from chiro manipulations nor from Osteopathic Manipulative Therapy. The classic 'turn the head and pop the neck' adjustment is often too aggressive for the subtle neck injuries common to concussions. The stroke issues is based on old lies spread by the medical establishment decades ago. The courts actually ruled that those claims were unsubstantiated and enjoined the AMA, etc. from continuing to spread those lies. The proof is the malpractice premiums paid by chiropractors. They are substantially less than those paid by most MD's.

There has been research into the CST skull plate 'readings' and manipulations that found them to be without any scientific/medical basis.