Bottles of 5000 mcg biotin capsules are typically available at local drugstores or retailers that carry nutritional supplements. They are also offered at several online retailers, including Amazon.com, Drugstore.com, and the websites for Walgreens, CVS and GNC. Pricing and specials vary depending on the site.
Nature's Bounty Super Potency Biotin is the 5000 mcg option offered at many venues, and user reviews are often posted. For those who prefer to shop in person, a store locator is available at the websites for Walgreens, CVS and GNC. An advance telephone call to the store can verify that it carries the 5000 mcg biotin capsules.