PQQ disodium salt and attention tests

Editorial study summary

Study type

Randomized, double-blind, placebo-controlled human trial.

Product relevance

Branded ingredient evidence from a different PQQ disodium salt preparation.

Sample or population

41 healthy older adults.

Studied dose

20 mg/day of the studied preparation or placebo.

Duration

12 weeks.

Finding

The study reported a difference on a Stroop attention measure. Improvement on the visuospatial task was reported only in the lower-baseline subgroup receiving PQQ.

Limitations

The subgroup and preliminary blood-flow observations do not establish a general cognitive benefit.

Study quality

Small placebo-controlled trial with task-specific and stratified analyses. Editorial review was limited to the abstract. No formal risk-of-bias rating was assigned.

Funding and disclosures

Funding and conflicts were not verified from the abstract.

The studies discussed here examine ingredients or other formulations. They do not establish results for this DR.MORGAN finished product.

Reference

1. Effect of the Antioxidant Supplement Pyrroloquinoline Quinone Disodium Salt (BioPQQ™) on Cognitive Functions. Adv Exp Med Biol. 2016. DOI 10.1007/978-1-4939-3023-4_40. PMID 26782228