Declaring medications

Planning a trip to Japan and spouse will need to bring two weeks of testosterone injectables into the country. I understand we don’t need to get a special authorization for this since it’s less than 30 days worth, but should he declare it on his pre-arrival immigration stuff? There is a question asking if we are bringing any controlled substance into the country and I believe testosterone is? How did any of you handle the immigration part of this?

by sbbranstetter