Rhamnus nakaharai

Rhamnus nakaharai is a Taiwanese folk medicine plant used traditionally for constipation and asthma. Part of the Rhamnus (buckthorn) genus found globally. Good source of quercetin glycosides. Very limited research exists on this specific species. Effects are likely similar to other quercetin sources or Rhamnus species. Not commercially available as a standalone supplement. Essentially unstudied scientifically.

Quick Answer

What it is

Rhamnus nakaharai is a Taiwanese folk medicine plant used traditionally for constipation and asthma. Part of the Rhamnus (buckthorn) genus found globally.

Key findings

Grade D: Constipation Relief
Grade D: Asthma Symptoms
Grade D: Antioxidant Status

Safety

No specific caution or interaction language was detected in the current summary/outcome notes.

ℹ️ Quick Facts: Rhamnus nakaharai

Quick Facts: Rhamnus nakaharai

Best Evidence:Grade D
Conditions Studied:2
Research Outcomes:3
Key Effect:Antioxidant Status

Outcomes by grade:

2 conditions · 3 outcomes

Detailed Outcomes

Constipation Relief

No published clinical or preclinical studies exist for Rhamnus nakaharai specifically. Traditional Taiwanese folk medicine use for constipation has been reported, and other Rhamnus species (e.g., R. purshiana/cascara) contain anthraquinones with known laxative effects, but no direct evidence supports this species.

small↑Improves

Asthma Symptoms

No published studies exist on Rhamnus nakaharai for asthma. Traditional Taiwanese folk use for asthma has been reported. Quercetin, a constituent of the plant, has shown anti-inflammatory and bronchodilatory effects in preclinical models, but these findings come from isolated quercetin research, not from this species.

small↓Improves

Antioxidant Status

No published studies have assessed the antioxidant effects of Rhamnus nakaharai. The plant contains quercetin glycosides, which are well-characterized antioxidants in other contexts, but no direct evidence from this species exists. Superior quercetin sources with actual research data are available.

small↑Improves

Evidence by Condition

Best grade per condition (each condition may have multiple outcomes)

DAntioxidant Status

1 outcome

↑Antioxidant StatusImproves

DAsthma

1 outcome

↓Asthma SymptomsImproves

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