My wife and I are planning an around the world adventure in May of 2026. We want to start out in Japan. We normally take a 90 day amount of prescriptions, but we've seen some blogs, where you can't take more than 30 days worth of prescriptions in Japan. Also you need to show a plane ticket of when you are leaving Japan, either returning home or moving on to your next destination.

Has anyone experienced either of these two situations?
Thanks

I didn't deal with either situation, but if you don't get a clear answer on this forum, I'd recommend that you ask on the japan-guide.com forum. IME, you'll get expert advice there.
https://www.japan-guide.com/forum/quedisplay.html

Use this website to make your entry easier: Visit Japan Web | Digital Agency Services
(where it asks for postal code just enter the numbers without the hyphen)

I have never, ever, been asked to provide onward travel information when going through Japan I&C. That is 14 trips, plus twice when I went landside for a couple hours, over 24 years. I was prepared to show confirmations for my departure flights but never needed it (had printed emails but now would just show it on phone).

I think that they might ask for proof of departure from Japan if you met a profile of an illegal immigrant. Am guessing, but I think multiple immigration stamps in your passport, your age, and your nationality means they won't bother you.

This gov site says 60 days of medication (which doesn't make sense given that you will enter as a 90-day Temporary Visitor).
Ministry of Health, Labour and Welfare: Information for those who are bringing medicines for personal use into Japan
Here is another site to look at, it has a contact email:
Bringing Over-the-Counter Medicine and Prescriptions into Japan - U.S. Embassy & Consulates in Japan

I did have my bag searched at customs once. But that was in Toyama and I definitely was a suspicious person, arriving from Korea/Thailand. The customs officer was interested in my bottle of pills - I think I pointed at my head and grimaced (ibuprofen for headaches). He was also interested in my bottle of Pepto Bismol and I tapped my tummy. He tapped his tummy (was amusing) and then nodded and let me go.

We had to show proof of onward travel when entering Japan in January - but probably because the immigration officer was confused by our entry forms that indicated we would only be there for 24 hours (we were on a long layover en route to Vietnam). I've gotten in the habit of having onward travel documentation handy, as I've also been asked to show it several times entering the Schengen area in the past 2-3 years. mrwunrfl has met me and can attest to the fact that I warrant the suspicion

Just back from Japan this past Sunday on our 23rd trip there (got you beat mrwnrfl lol). I travel with my actual pill bottles with 90 day supply in each. I am aware of the 60 day amount of meds per the government requirements and have never been asked about my medicines. This time I even had a separate cooler container for my diet injections and wasnt asked anything. I keep all my meds in my carry on in one ziplock clear bag. Good Luck and enjoy your trip to Japan!

Aloha!

Additionally, I did get asked for proof of onward travel when entering Japan at KIX this time. I had bought separate tickets, economy into KIX on JAL and business tickets out of NRT on ANA to get better pricing and C&I was curious about when and how I was leaving Japan.

Aloha!

I am in between number of Japan trips from mrwunrfl and hawaiiantraveler and have never been asked for proof of onward travel as of yet. As far as meds since I am staying almost 3 months I apply for the Yunyu Kakunin-sho Import Certificate...never had a problem and I never show it when I arrive - why ask for trouble....