Ok....
Vitamin E
Zink
False Unicorn (I found this to be quite expensive, but I know in the USA they can get it quite cheap, not sure about importing it though)
Also, Baby aspirin can help also

The suppliments DH should take also, as well as folic acid (he can skip the false unicorn) it will help is sperm to build up in numbers hand health

Good Luck
Tanya