This study assesses the efficacy of a fixed dose of Ropren(®) (a plant preparation isolated from the neutral fraction of an extract of spruce needles) on cognitive impairment in rats with β-amyloid peptide-(25-35)-induced amnesia. Ropren(®) was administered at a dose of 8.6mg/kg for 28 days, per os, to rats with β-amyloid peptide-(25-35)-induced amnesia.
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