Theres been at least one recent thread where we discussed whether dhea was suppressive or not.
My opinion, fwiw...
I probably wouldnt use it in any scenario, such as during PCT, where you are hormonally dysfunctional or compromised.
However, if youre otherwise healthy, it seems unlikely that dhea will be suppressive based on the current evidence.
The caveat here being it is ultimately going to be up to the user to assess the studies and weigh any risk for themselves. Also, any risk will tend to be dose-dependant as well. Keep in mind that SUP3R DHEA can allow for quite a hefty dose of dhea.