What’s the strongest kratom you can buy? A plant-derived liquid extract with 83 mg of mitragynine per serving. Two shots hit that number: Left Coast LCK250 Nano and Kraken Zenith NANO 250. Same 250 mg bottle, same $18.99. For powder, the strongest kratom is the Maeng Da batch with the most mitragynine on its lab … Continue reading Strongest Kratom (2026): Most Potent Strains & Extracts, Ranked by Mitragynine