All MitoQ supplements contain 5mg of the key ingredient MitoQ (Mitoquinol Mesylate).
All MitoQ supplements contain the same 5mg of MitoQ (Mitoquinol Mesylate).
The MitoQ 5mg just contains 5mg of MitoQ, with no additional ingredients added.
Our other MitoQ supplements also contain MitoQ, but are combined with other ingredients to target specific aspects of health (for example MitoQ Joint contains 5mg of MitoQ plus green lipped mussel extract).
Which one you choose will very much depend on your health goals, however if you are trying MitoQ for the first time, we would recommend trying the MitoQ 5mg product to start off with.