Centrum Silver.. lelong lelong..

The other day when I brought mummy to see her geriatric doc, he suggested that I get Centrum Silver for her as it's a muilti-vit for older folks. Sigh! After consumming it for 3 days, my mum refused to take it anymore as she complains of acute & severe pain on her legs. What to do now? Anyone out there interested in buying over from me at a discounted price? Willing to sell at 30% discount. Any takers?