D- asperatic acid⚠️( Side effect increased sperm??)

Has anyone husband taken this to help with fertility? If so share your experience. Mine just started last week. After a year of trying we've decided to take another approach and naturally aid ourselves but you have to have sex to get pregnant right?? I've noticed his libido dropping since he got 30, he says its be cause hes tired but I'm not so sure so I mentioned his testosterone could be low. Whether its effecting his energy or libido idk but he started this and a light workout routine and we have had amazing sex! Like twice last night within 2 hours!!! This hasn't happened since the first year together 4 years ago. But if you've made it this far and have some input I'd love to know if it really helped sperm count.