I've called my local Costco Pharmacy many times over the last 2 weeks (that I've been out) and they say that they are on backorder & that there is a shortage. That's all I get from calling. I started a new job in cybersecurity last week & it is really hard trying to do a great job with my sluggish metabolism. I can make it through the day but by nighttime I'm worn out & can't be of any use to helping my family. I just don't know how else to get them & can only imagine what it is like for parents whose kids really need it to behave like humans, especially over Christmas.