mark_tokyo said:

The variables that decide how a cross-border order goes are declaration wording, the destination country's import rules for prescription medicines,…

My experience ordering cross-border ordering internationally: I've ordered from a Canadian pharmacy. Customs can be hit or miss.

Shipping time: 10-21 days
Customs clearance: held for 3 days then released
Quality: Janoshik tested at 98.4% purity

International ordering adds complexity but can save 60-80% compared to US prices. Research your country's import laws first.

mark_tokyo said:

The variables that decide how a cross-border order goes are declaration wording, the destination country's import rules for prescription medicines,…

This is where I part company with the consensus forming above. Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions. What is a personal-import allowance in one country is a controlled-import offence in another.

Dr.NutriCornell said:

Import rules are jurisdiction-specific and this board keeps giving US-shaped answers to non-US questions.

International shipping tracking for cross-border ordering orders: my experience with customs in the US when ordering from overseas:

Package cleared customs in 2 days, no issues.

Tips: always include a copy of your prescription, declare medication properly on customs forms, keep quantities reasonable (personal use = 3 month supply max), and use a vendor who has experience shipping to your country.

Dr.LipidDallas said:

My experience ordering cross-border ordering internationally: I've ordered from a Canadian pharmacy.

This is my experience too, for whatever a second data point is worth. The detail I would add is minor and it is already implied above.