Canadian here - our healthcare covers everything EXCEPT this apparently

CanadaChris said:

One order arrived in nine days, one was held at the border for a fortnight, and one came back with a seizure notice.

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 99.4% purity

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

Dr.ObesityMed said:

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

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.

CanadaChris said:

One order arrived in nine days, one was held at the border for a fortnight, and one came back with a seizure notice.

Second this. Nothing to add that would improve it.

Adding the clinical framing, because it changes how the question reads. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.