Stinging Nettle and allergies

What 2 graded rows on stinging nettle agree on for allergies, and where they differ. Counted side by side, never averaged.

Consensus finder Rows from the Stinging Nettle page, reviewed Oct 21, 2026 How it decides

What the rows agree on

Each block and row is one graded row from the Stinging Nettle page, with its PubMed record.

Supplement

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2 rows · 172 people

Split. 1 row found no difference and 1 had mixed results.

No difference or mixed

Improved

Each block is one evidence row, sized by how many people it enrolled, with its grade inside. Outlined: mixed results.

From the rows

The best-graded row, grade D, is a randomized trial of 98 people (1990) and reported mixed results.

The rows run from 74 to 98 people, published from 1990 to 2017: 2 single studies.

1 no difference · 1 mixed

Grade DAllergic rhinitis symptoms and markers · No difference
RCT · n 74 · 2017 · Adults with allergic rhinitis and a positive skin prick test
150 mg · 1 month
Symptom scores improved in both the nettle and placebo groups; nasal eosinophils fell with nettle, IgE, IL-4 and IL-5 did not change. Only 40 of 74 completed.
Row on the Stinging Nettle page · PubMed 29844782 (opens PubMed)
Grade DAllergic rhinitis symptoms · Mixed
RCT · n 98 · 1990 · Adults with allergic rhinitis
Not stated in the abstract · 1 week
Nettle was rated higher than placebo in global assessments but only slightly higher in symptom diaries; 69 of 98 completed.
Row on the Stinging Nettle page · PubMed 2192379 (opens PubMed)