It's the RX ERGOCALCIFEROL
stop that and use BIOTECH 50,000iu instead.
Look at the graph here.
What we are looking at is the result of comparing the absorption and utilization of ergocalciferol (RX) and cholecalciferol.
At 4 days the absorption is similar BUT by day 6 we see the RX Vit d is declining while the Cholecalciferol D3 OTC is still rising.
The decline in D2 continues and by day 15 there is virtually none left while D3 is peaking.
By day 30 the difference in 25(OH)D is significant.
This happens time and time again. I've had people tell me their doctor simply increases the D2 unaware that it is speeding up vitamin D consumption. The more they take the faster their bodies dispose of it. I've had one person say they were taking 150,000iu DAILY and still has declining 25(OH)D.
I don't understand why they won't tell people to use the OTC version, It's far more effective. Far Safer and Far Longer Lasting and FAR FAR CHEAPER. (perhaps that the problem)
This is the brand I use because the carrier oil is MCT and that has some benefits. I don't like soy so wouldn't take that BUT the amount in a capsule is so small it's not a big deal. So don't waste the one's you've bought just use them up and don't buy more.
Liver is a good source of natural vitamin A some vitamin A is necessary to ensure Vit D works well, Dr Cannel has shown that some Vitamin A's in supplements may block the action of vitamin D so it's not a clear cut yes/no situation.
But I will agree that LIVER is good for you and I like it at least once a week and it is far less likely to be harmful than synthetic stuff from a supplement.
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