I've used vitamin D3 50,000 IU capsules 3x a week orally with great benefit, but no relief from BV. As such, I found a study that showed benefit for using the capsules as a suppository for dysplasia, HPV, and BV. I've begun doing this and after one dose, I am 50% better. I mixed in a 00 capsule the powder from a 50,000 IU Vitamin D3 and from a Lactobacillus acidophilus capsule and used coconut oil on the outside for inserting. For resistant BV, dysplasia, or HPV, it is worth a shot!
Read this, http://scienceindex.com/stories/1563216/Chronical_cervical_infections_and_dysplasia_CIN_I_CIN_IIvaginal_vitamin_D_high_dose_treatment_a_new_effective_method.html#.UD58JBw7jww
It should be noted, I get my blood levels tested every 6 months and I've never once had an excessive level or adverse reaction from doses at 150, 000IU's per week. In fact, some times my levels are still below 50 ng/ml! I don't know why folks are so scared of high dose vitamin D, as there are few cases of adverse reactions and NOBODY has ever been documented dying from excess amounts, ever!
In addition, when I am sick my doctor instructs me to take 1,000 IU's per body weight for 3 days. I've done this on numerous occasions without problem and with great results.