My DH had a 1% morphology result with his first SA. We were told it was very unlikely that we'd conceive naturally. We tried for four and a half years, went through three IUIs and one IVF - all failed. Then we started taking Fertility Blend and conceived our son. Now we have conceived again on our own. It's the only supplement I have found that states that it can help improve sperm morphology. Might be worth looking into it.
FertilityBlend: Optimize Reproductive Health - Home.