Pyrroloquinoline Quinone: A Nootropic Supplement with Positive and Negative Effects


Pyrroloquinoline quinone (PQQ) is a naturally occurring compound found in plants, bacteria, and some animal tissues. It is also known as methoxatin, methoxatin quinone, and 2-methyl-3-pyrrolidinone quinone. PQQ is a powerful antioxidant and has been studied for its potential nootropic effects.

Positive Effects

  • May improve cognitive function
  • May reduce inflammation
  • May improve energy levels
  • May reduce oxidative stress
  • May improve mitochondrial function

Negative Effects

  • May cause gastrointestinal discomfort
  • May cause headaches
  • May cause skin irritation
  • May interact with certain medications


The recommended dosage of PQQ is 10-20 mg per day. It is best to start with a lower dose and gradually increase it over time. It is important to consult with a healthcare professional before taking PQQ to ensure it is safe for you.


PQQ was first discovered in 1979 by Japanese scientists. Since then, it has been studied for its potential health benefits, including its antioxidant and nootropic effects. In recent years, PQQ has become increasingly popular as a dietary supplement.

Where can you buy Pyrroloquinoline quinone?

Below we've compiled an index of all the vendors that have Pyrroloquinoline quinone for sale that we could find.
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