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Answer:Possible side effects of evening primrose include indigestion, nausea or upset stomach, soft stools, and headache. Large doses of evening primrose can lead to loose stools and abdominal pain.

As with many other herbal products, evening primrose does have some potentially dangerous drug interactions:

As a result, if you currently are taking any seizure, antipsychotic, or blood-thinning medication, you should avoid evening primrose.

In addition, if you are taking any prescription medication, always consult your doctor or pharmacist before taking any herbal product.

Finally, the maximum safe dose of evening primrose for young children, pregnant or nursing women, or those with severe liver or kidney disease has not been established.

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