Some companies provide Vitamin D AND cofactors
Ionic-Fizz Super D-K Calcium Plus
Amazon 2 sizes: Month ($35), and a smaller amount
Ingredients include
Vitamin A 250 IU - probably enough
Vitamin C 250 mg
Vitamin D3 1000 IU not much
Vitamin K2 (MK-7) 45 mg
Calcium 250 mg
Magnesium 300 mg (from Magnesium Carbonate - not the best)
Zinc 2mg
Silica
Boron 0.5 mg
plus some other stuff
level scoop in 6 ounces of water, many different flavors
Seems like 2 scoops a day would be correct, even with that you probably want to add more vitamin D
- probably with at least 4 hours between scoops because of the Magnesium
Revolution -D Vitamin D3 Stop Aging now
$19 for 1 month supply of 2 pills daily
Free shipping and they have a 1 year guarantee
Vitamin C 100 mg
Vitamin D 3 5000 IU
Vitamin K2 100 mcg
Magnesium (from magnesium citrate) 125 mg
Zinc 10 mg
Boron (as boron citrate) 3 mg
plus some other stuff
Seems to be much lower cost and have >2X as much content as the fizz above
The Vitamin A, which it lacks, is probably not needed in most developed countries.
It appears that this is best - Admin of Vitamin D Life
Fairly low cost; only 2 instead of 4 tablets; provides a lot of vitamin D, K2, Boron, and Zinc
OsteoPrime by Enzymatic Therapy
Many companies sell it. Example Swanson Vitamins
4 tablets daily for a month $13
Vitamin C (ascorbic acid) 100 mg
Vitamin D (as cholecalciferol) 600 IU needs more Vitamin D
Vitamin K (as phytonadione) 300 mcg this is K1, not the better K2
Calcium (from misc forms) 600 mg
Phosphorus (from tricalcium phosphate) 96 mg
Magnesium (as magnesium oxide and magnesium aspartate) 250 mg
Zinc (as zinc picolinate) 20 mg
Boron 2 mg
Strontium (as strontium chloride) 2 mg - very few supplements include this cofactor with helps bones
Silicon (from sodium metasilicate) 1 mg
plus some other stuff
Osteo-Tech by Biotech Pharmacal
Amazon $25 for 100 - take 4/day, so a little less than a 1 month supply
Vitamin C 66 mg
Vitamin D 5,000 IU
Vitamin K1 100 micrograms
Vitamin K2 45 micrograms
Calcium 400 mg
Magnesium 200 mg
Zinc 10 mg
Silicon 15 mg (as Horsetail powdered extract)