Absolutely it will be beneficial! It equals about 8500iu per day. Taking it once a week is fine. It will probably take a couple of months to get your levels up. I assume they will retest you again or they should. Again you should try and reach at least 50ng/ml. Once you do, you may only need a maintenance dosage of 5000iu per day. This is what most average people need. (So hopefully they will not recommend a lower amount than that.) Let me know if you have anymore questions!