I was having some health problems and my doctor tested my Vitamin D levels. It turned out that I was extremely low, and she recommended Bio D-Mulsion Forte. As per my doctor's recommendation, I take 5 drops each day of the 2000 mg. She monitors my blood levels to make sure I don't accidentally overdose myself.
My general health has improved in the last few months, and my immunity is so much better that I have not caught any "bug" that goes around since I started taking this product - even though I live with and care for two elementary age granddaughters who catch and carry every illness that goes around their school. Now, I have purchased the 400 mg strength, and give it to my granddaughters (along with cod liver oil) every day before school. They seem to be sick less often, and recover faster when they do catch something.
I have always been suseptible to severe colds and have developed a seasonal asthma because years of coughing have damaged my breathing passages. It is important to minimize my risk of getting winter colds and this vitamin D has helped considerably.
A note about the price: I purchased this on Amazon for around $20.00, but my doctor charged me $250.00 for exactly the same product. I was glad to get such in important remedy at any price, but it is much cheaper here. I say, "Get it from Amazon".