Polycystic ovarian condition (PCOS) is the most well-known endocrine problem that influences ladies in the youngster bearing period. The point of the current examination was to contemplate the impact of nutrient D supplementation in nutrient D inadequate PCOS ladies, as respects the clinical pregnancy and ovulation rates. Patient and techniques : This is a Randomized controlled clinical preliminary investigation included 100 nutrient D inadequate/lacking fruitless ladies with an analysis of PCOS. Serum 25-OH-VD levels were estimated and ladies were haphazardly partitioned into Vitamin D and placepo gatherings. Following 3 months of metformin ± nutrient D supplementation, all included ladies got ovulation enlistment by letrozole 2.5 mg. Sequential trans vaginal ultrasound was performed and evaluated. Results: Following nutrient D3 supplementation, the rate of continuous pregnancy demonstrated genuinely huge expansion in nutrient D gathering contrasted with fake treatment group(39.1% and 18.4%% separately) P = 0.025. Likewise measurably critical expansion in ovulation after the enlistment cycles in vit D gathering contrasted with the fake treatment gathering (p = 0.001, 0.001 and 0.045) through three continuous acceptance cycles . End: In subfertile ladies with PCOS, Vitamin D supplementation may have a possible adjuvant part to standard enlistment of ovulation regimens.