From what sources can I purchase medicine through the internet?

Greetings forum members, Im curious in which stores you typically purchase prescription meds online.
 
Do you rely on popular platforms independent vendors?
Trying to find a dependable source and cant make up my mind.
Tips would be greatly appreciated, mainly if they offer good deals efficient service.
Also, how do you ensure if the platform can be trusted?
 
Much appreciated for helping out!
 
 
 
 
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iMedix