common periwinkle extract

Reported Uses

• NOTE: see Herb & Supplement Effectiveness Rating Definitions table
• age-related cognitive decline [Insufficient Evidence]
• age-related macular degeneration [Insufficient Evidence]
• chronic fatigue syndrome [Insufficient Evidence]
• dementia [Possibly Effective]
• epilepsy [Insufficient Evidence]
• hearing loss [Insufficient Evidence]
• memory [Insufficient Evidence]
• menopausal sx [Insufficient Evidence]
• motion sickness [Insufficient Evidence]
• stroke [Insufficient Evidence]
• tinnitus [Insufficient Evidence]
• urinary incontinence [Insufficient Evidence]

Reported Doses

Safety/efficacy may not be established; reported doses may be derived from limited or potentially inadequate studies w/ variable regimens, multi-ingredient products, or where concentration of active ingredients may vary widely

Effectiveness Ratings

[see Herb & Supplement Effectiveness Rating Definitions table]

age-related macular degeneration

[Insufficient Evidence]

Dose: 10 mg PO qd; Info: used w/ conventional tx

dementia

[Possibly Effective]

Dose: 5-20 mg PO tid

hearing loss

[Insufficient Evidence]

Dose: 10 mg PO tid

memory

[Insufficient Evidence]

Dose: 10-40 mg PO tid; Alt: 40 mg PO x1

urinary incontinence

[Insufficient Evidence]

Dose: 10 mg PO tid