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ATC S01AD07 · Antivirals · updated 2 Nov 2026

Famciclovir shortage

As of 2 Nov 2026, Famciclovir has a reported shortage in 1 of the 16 countries we track (Japan), covering 1 product from 1 company.

Is there a Famciclovir shortage?

Yes. As of 2 Nov 2026, Famciclovir is reported short in 1 of the 16 countries we track: Japan. No company has given a return date. New since 3 Oct 2026: Japan.

Countries1/16
Products1packs or presentations
Companies11 listed
Short since29 Oct 20264 days ago
Earliest returnnot givencompany estimate
Main reasonIncreased demand

Timeline

Japan
ファムシクロビル錠250mg「トーワ」ファムシクロビル錠250mg「トーワ」today

Solid bars run from the reported start to today; faded bars show the time left until the expected return. An arrow means no return date was given.

Which companies are short

products short, all countries
Towa (Pensa)1 4553

Listed: Towa (Pensa) 4553 · Tokyo

Compared with similar medicines

ATC group S01AD · Antivirals
Aciclovir2/16Famciclovir1/16Ganciclovir1/16Trifluridine1/16

Affected products

CountryProductCompanySinceExpected backReason
ファムシクロビル錠250mg「トーワ」 limitedTowa (Pensa)29 Oct 2026not givenIncreased demand

"Expected back" is the date the company gave the authority, when it gave one. Ask a pharmacist about alternatives.

Questions

Is there a Famciclovir shortage?

Yes. As of 2 Nov 2026, Famciclovir is reported short in 1 of the 16 countries we track: Japan. No company has given a return date. New since 3 Oct 2026: Japan.

When will Famciclovir be back in stock?

No return date has been given; Japan: no date given. These are company estimates reported to each authority.

Why is Famciclovir in short supply?

The most common reason reported is: increased demand. Reasons by product are listed in the table below.

Which companies have Famciclovir shortages?

Towa (Pensa).