Is there a recommendable online option with international delivery?
(I don't consider the usual 'online pharmacies' recommendable. Even when buying Melatonin in a store in the US, there's still the issue that Melatonin manufacturers and sellers mostly control themselves …)
The products I ordered definitely work so I think I trust them.
They even have the more questionable supplements such as Phenibut.
They ship this to Denmark at least, though it's possible some products are not shippable to some countries if there are stricter local laws.
It all disappeared for a while but there's sellers offering it again now.