No quality evidence it helps the fertility outcome it's marketed for (cervical mucus); a systematic review found real pregnancy-complication risk with oral use, which is exactly the scenario an unknowingly-pregnant TTC user could be in.
A plant-oil supplement, marketed specifically to TTC women as a way to improve cervical mucus around ovulation.
What the evidence shows
1No high-quality trial evidence found that EPO improves cervical mucus or pregnancy rates — the claimed mechanism (GLA converting to prostaglandins) is plausible pharmacology, not demonstrated clinical benefit.
Evidence tier
⛔Documented harm
⛔ Peer-reviewed evidence of serious adverse effects from the item's own chemistry/pharmacology or a well-characterized allergic mechanism. More serious than contamination; not resolved by buying a 'reputable brand'.