Unfortunately, BCG has been scarce for almost a year or so. But it IS the best first treatment and is worth waiting for. Interferon is used in conjunction with BCG usually when BCG alone fails, and mitomycin is often used when a patient cannot tolerate BCG, but it is not quite as effective.
BCG is a biologic agent and not a typical drug that is made in a laboratory. It has a history of difficulties in production and there are few commercial sources of it.
While I am sure that you are impatient to get this started, (I know I would be) a month's delay shouldn't affect his prognosis. Meanwhile, check with your doctor every week or so to "keep the pressure on."
Sara Anne