There are a lot of good medical references out there in Germany with interaction of traditional and alternative meds. They are are still ahead with that in Germany. There is also a PDR out for alternative meds. It's big, but I did get it and think it is great. Plus you can ask the pharmacist...
I'm also on vitamin D3. I take about 2000 IU per day. It's a lot for most, but I do need this large dose to get it right for me. Vitamin A is also an issue for me. Then comes B12 which I need to inject. I'm all for natural ways, if it works. Most of the time it actually does work. In...
You can use brewer's yeast instead. I don't have a dosage for that.
I'm not to sure about the nutrition not being absorbed when it is not from a natural source. I had stomach surgery a couple of years ago and can no longer absorb many of the vitamins naturally from food. Do do however am...
I would stay away from spinach. Commercial feed is notoriously low on niacin since chicken don't need that much. Niacin is very cheap to buy so I would add it to the drinking water at least once per month. Don't worry about the wasted water, since niacin is cheap. I'm also in Oregon, but in...
Could be a neurological issue, and then there is nothing you can do.
Make sure he does not have an ear infection, because that can mess with their sense of orientation. Giving them a ducky version of vertigo.
Add niacin (vitamin B3) to the diet. A lack of it can also cause disorientation...