Well with the exception of a retailer in PA, no one really "stocks up" when its back in stock. So instead of me shipping 99% of the run to manufactures off the top, they do their "3 day supply" order then when they call to order more, its all gone, Im shipping a crap load overseas today.
To partially fix the problem is why I am coming out with DTP, but I dont have the money to have 6 months of DTH sitting around, and every month or with every order there is something that goes wrong with my manufacture. Thats one reason I switched from the "mega" tab, the big ass tabs. Only certain manufactures could punch that size, then it had to go somewhere else to be enteric coated.
If retailers ordered more off the top, then they would have enough to last through the "droughts". Which is why its usually instock all the time at one place.....they order hundreds of bottles at a time.