Maybe. I used an online prescribing service, RedboxRx. The problem is that it's being prescribed “off label” for long covid, when it was originally meant for children with ADD, so the nuances of it's use for an older long hauler might only be known by a medication psychiatrist who's been working with long haulers. Probably not too many of those. I'm guessing that guanfacine's mechanism of action is somewhat different on a sixty something brain than a child's ADD brain. The only detailed internet info on guanfacine I could find was a very helpful list of meds, supplements, and foods that could be problematic. That list was not in the drug info pamplet.