There is a long standing debate that chams can or can not convert the beta carotene to vitamin A in the herptivite. So some still use it and some don't.
I don't use it because I have never wanted to risk it. I use Reptivite instead and it has preformed A.
You can get the with D3 version or without D3 version it depends on what other supplements you use. It would be used 2 times a month. every other week.
If you have a calcium with D3 on its own. Drop using that one if you get the reptivite with D3 though. Then all other feedings would be the phos free calcium without D3.