If you are refering to "Puritan's Pride" then yes, I buy practically ALL my vitamins from them. Excellent quality and unbeatable prices. Puritan is a reputable company that prides itselfe in providing you with 100% of what they advertise. In other words, a 500mg tablet of Glucosamine will contain 500 mg of Glucosamine. not 300 mg or so and some fluff. These are good people who have been in the business for over 40 years. Give them a try. you won't be dissapointed.
P.S. No, I am not a sales rep for Puritan