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For dehydrated powders (including encapsulated echinacea) the species of purpuera tends to be used and oral doses are taken upwards of 300mg thrice a day (900mg daily) and 500mg thrice daily (1,500mg daily).
Tinctures of an ethanolic extract of the aerial parts (leaves and stems) appears to be used in the concentration of 2.5mL thrice a day or up to 10mL daily.
There is no much evidence as to whether these are the optimal doses, and studies seem to be very heterogeneous in their benefits due to lack of standardization. *
There is currently no official dosage recommendation for echinacea.
One reason being that findings from echinacea research are highly variable.
In addition, echinacea products often may not contain what is written on the label. One study found that 10% of echinacea products samples did not contain any echinacea.
This is why you should purchase echinacea products from trusted brands.
That said, research has found the following doses to be effective in aiding immunity:
- Dry powdered extract: 300–500 mg of Echinacea purpurea, three times daily.
- Liquid extract tinctures: 2.5 ml, three times daily, or up to 10 ml daily.
However, it’s best to follow the instructions that come with your specific supplement.
Keep in mind that these recommendations are for short-term use, as echinacea’s long-term effects on the body are still relatively unknown. *
