Proof-of-Concept Randomized Controlled Study of Cognition Effects of the Proprietary Extract <i>Sceletium tortuosum</i> (Zembrin) Targeting Phosphodiesterase-4 in Cognitively Healthy Subjects: Implications for Alzheimer’s Dementia

<div>Chemical structures of alkaloids isolated from<i> Sceletium tortuosum</i>: mesembrine, mesembrenol, mesembrenone, and mesembranol.</div>

Evidence-Based Complementary and Alternative Medicine

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Figure 1: Proof-of-Concept Randomized Controlled Study of Cognition Effects of the Proprietary Extract <i>Sceletium tortuosum</i> (Zembrin) Targeting Phosphodiesterase-4 in Cognitively Healthy Subjects: Implications for Alzheimer’s Dementia 

Figure 1 | Proof-of-Concept Randomized Controlled Study of Cognition Effects of the Proprietary Extract Sceletium tortuosum (Zembrin) Targeting Phosphodiesterase-4 in Cognitively Healthy Subjects: Implications for Alzheimer’s Dementia 