For those of you who are late to the discussion, the benefits of PQQ are discussed by Tacitus, et al in these two previous threads:
PQQ is now available in 10mg capsules from the Life Extension Foundation. They don’t sell pheromones so I’m gonna assume it’s okay to post links. They recommend that you take PQQ with CoQ10 (preferably as ubiquinol).
Life Extension Magazine article about PQQ and its benefits -