N/B B-12 1000mg (Pack of 100). Made by Nature's Bounty. Buy N/B B-12 1000mg online in Karachi at Nice Super Market & Pharmacy, DHA - see the price in Pakistan and order on nicemart.pk or the Nice Mart app. Same-day delivery in DHA and Clifton. Prescription medicines are supplied only against a valid prescription. Use as advised by your doctor or pharmacist.