I use it but with a lot of caution and here's the reason why:
Once a botanist told me superthrive can cause kind of "adiction" in the plants, and that using it more than once a month could be dangerous in the long term, he exemplified with orchids, he told me that f you stop giving them superthrive once the orchids had got "addicted" they will put out malformed flowers or smaller growth until they die, I don't know if this is true at 100% but I really trust that botanist and he is not against the use of supertrhive, actually he uses it on his plants, he just told me to be careful when using it.
Now, I would be glad to know what do you guys think about this, particularly Nepenthes101, you use superthive a lot! haven't you noticed smaller leaves or malformed growth in your Neps?? For how much time have you been using it?
Regards,
—Abiram—