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Description
Product quality is a practical risk

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 Alzheimers dementia

Look for purity levels at 98% minimum, with 99% or higher preferred

Pain levels may remain unchanged or show minor improvement
