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The herb ephedra (Ma Huang/Mormon Tea) contains appreciable amounts of ephedrine and is prepared as a tea in Chinese medicine as a remedy for asthma and cold congestion.

It can easily be purchased online and the ephedrine ban does not apply to it.

https://melmagazine.com/en-us/story/mormon-tea-ephedra-plant...

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Any idea how pure or clean these online sources are?

NB: ephedrine and pseudoephedrine are related (they're stereoisomers), but are different drugs with somewhat different pharmacokinetics.

This is true, but the plant actually contains both. The amount of each can vary widely based on which species you're talking about. The species linked here, commonly known as Mormon Tea, is one of the few species that doesn't contain any ephedrine and only contains pseudo

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