S-腺苷甲硫胺酸 SAMe × 骨關節炎

結論:證據支持但有警示

The single strongest piece of evidence is the 2009 Cochrane review (4 placebo-controlled trials, 656 patients), which found SAMe no better than placebo for pain (SMD -0.

C 🟠 C 薄弱證據 附警語發布 low — community discussion mostly non-commercial
⚠️ 標記 ⚠️ stale ⚠️ COI(產業聯盟資助) 🇹🇼 台灣在地警示 💊 檢驗 / 藥物交互作用

The single strongest piece of evidence is the 2009 Cochrane review (4 placebo-controlled trials, 656 patients), which found SAMe no better than placebo for pain (SMD -0.17, 95% CI -0.34 to 0.01, crossing zero) and essentially no functional benefit (SMD 0.02), explicitly judging the evidence inconclusive and advising against routine use. The frequently cited NSAID-comparable result rests mainly on the 2002 meta-analysis and small head-to-head trials versus nabumetone and celecoxib that lack a placebo arm, so apparent equivalence can simply reflect a shared placebo response rather than a true SAMe effect; several of these trials are old, heterogeneous in dose and formulation, and partly industry-funded (the celecoxib trial was supplied SAMe by NOW Foods). Examine grades Pain B but grades the Osteoarthritis Symptoms endpoint itself D (no effect), and ACR/AF and OARSI guidelines do not recommend SAMe at all. When the best placebo-controlled evidence is null and authoritative reviewers (NCCIH, Harvard Health) describe the benefit as small, inconsistent, or possibly due to chance, the honest grade is C: there is a plausible but unconfirmed signal, not a reliably demonstrated effect. I therefore grade this C rather than the B implied by the Examine Pain outcome.

⚖️

評分透明度

所有分數由 7 層證據引擎計算,過程公開可查
原始分數 0.42
D
C
B
A
S
← 反證據 / 無效有效 / 強證據 →
最終評級
C · 附警語發布
信心度
77%
證據方向大致一致
證據層級
E1
Cochrane 高品質系統性回顧/統合分析

各層「支持此療效」的程度

分數越低=該層越不支持
L2 PubMed原始文獻
0.45
L3 機轉生理合理性
0.45
L5 臨床機構權威立場
0.47
L11 AI 複核獨立判讀
0.50
L1 Examine國際基準
0.70
不支持 中性 / 混合 支持
查看完整決策路徑(audit trail)
  1. compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.416
  2. tier_from_score — 依分數區間映射至 tier letter
  3. apply_hec_rules — 無高階證據可裁決
  4. tier_strict_requirement_check — Tier 條件達標,未降階
  5. detect_disputes — 偵測到 0 個 hard + 2 個 soft dispute
  6. decide_status — 依 tier + dispute 結果決定 status

S-Adenosylmethionine for osteoarthritis of the knee or hip
PMID: 19821403 2009 Cochrane SR n = 656
結論:Versus placebo, SAMe produced only a small, non-significant pain effect (SMD -0.17, ~0.4 cm on a 10 cm VAS) and negligible functional change (SMD 0.02). Both SAMe and placebo improved pain by about 2 points on a 0-10 scale over 3 months. Methodological quality and reporting were poor; review judged inconclusive.
效應量:Pain SMD -0.17 (95% CI -0.34 to 0.01); Function SMD 0.02 (95% CI -0.68 to 0.71)
前往 PubMed
Safety and efficacy of S-adenosylmethionine (SAMe) for osteoarthritis
PMID: 12019049 2002 統合分析
結論:Versus placebo, SAMe reduced functional limitation (effect size 0.31) but not pain significantly (effect size 0.22, based on only 2 studies). Versus NSAIDs, SAMe was comparable for pain (0.12) and function (0.025) and patients on SAMe were less likely to report adverse effects.
政府資助 效應量:vs placebo: function ES 0.31, pain ES 0.22 (NS); vs NSAIDs: pain ES 0.12, function ES 0.025
前往 PubMed
Comparative clinical trial of S-adenosylmethionine versus nabumetone for the treatment of knee osteoarthritis: an 8-week, multicenter, randomized, double-blind, double-dummy, Phase IV study in Kore…
PMID: 20110025 2009 RCT (double-blind) n = 134
結論:Both treatments significantly reduced pain from baseline (SAMe -13.0 mm, nabumetone -15.7 mm; both P<0.001) with no significant between-group difference. WOMAC and global assessments were comparable. No significant difference in pain relief or tolerability over 8 weeks.
效應量:Between-group pain difference not significant (SAMe -13.0 mm vs nabumetone -15.7 mm)
前往 PubMed
S-Adenosyl methionine (SAMe) versus celecoxib for the treatment of osteoarthritis symptoms: a double-blind cross-over trial
PMID: 15102339 2004 RCT (double-blind) n = 61
結論:In month 1 celecoxib produced significantly greater pain reduction (p=0.024); by month 2 there was no significant difference between treatments and equivalence was met. Both groups improved in function. SAMe has a slower onset of action but was as effective as celecoxib by 2 months.
🟠 品質有限 ⚠️ 廠商資助 效應量:Month 1 favors celecoxib (p=0.024); Month 2 equivalent (10% threshold)
前往 PubMed

L4a US FDA
謹慎
A lab-made form of SAMe is sold as a dietary supplement in the U.S., but SAMe has been sold as a prescription drug in parts of Europe for decades. 來源↗
L4b EU EFSA
未表態
— 本適應症無對應資料
L4c UK NHS
未表態
— 本適應症無對應資料
L4d TW TFDA / 衛福部
中性
從 1970 年代起,歐洲已廣泛使用 SAMe 來治療憂鬱症及其他生理狀況;1999 年美國則依《膳食補充劑健康與教育法》核准口服腸溶 SAMe 劑型,使消費者得於零售通路購買。 來源↗
L4e WHO
未表態
— 本適應症無對應資料

L5a NIH Office of Dietary Supplements
謹慎
L5b Mayo Clinic
中性
Many studies comparing the use of SAMe with nonsteroidal anti-inflammatory drugs showed that each provided similar pain relief and improvement in joint function, but SAMe produced fewer side effects. However, a smaller number of studies haven't shown the same results. 來源↗
L5c Cleveland Clinic
未表態
— 本適應症無對應資料
L5d Harvard Health
謹慎
L5e Specialty Society (condition-mapped)
未表態

PTT · Dcard · Mobile01 彙整自公開論壇討論,非統計抽樣,僅反映社群風向。
廣告 / 業配密度 低度
📍立場總覽

台灣社群(PTT regimen/FITNESS/elderly/Pharmacy、Mobile01、Dcard、痞客邦)關於退化性關節炎的保健討論極為熱絡,但幾乎清一色集中在葡萄糖胺、軟骨素、UC-II(非變性第二型膠原)、MSM、膠原蛋白與綠唇貝;針對 S-腺苷甲硫胺酸(SAMe)用於骨關節炎的本土實測討論基本不存在,屬在地冷門補充品,無可萃取的鄉民共識。

L10a · 廠商行銷話術 行銷語言
💬 通路如何宣傳

NOW Foods, SAMe, 400 mg, 60 Tablets

代表來源 ↗
L10b · TFDA 法定身份 官方認定

S-腺苷甲硫氨酸據說對抑鬱、骨關節炎、膽汁淤積和肝功能異常的治療都有效;商品名稱包括思美泰/Transmetil。

來源 ↗

  • 陸上運動與肌力訓練
  • 減重(過重者)
  • 局部或口服 NSAID
PMID 100% 反查全部經 NCBI Entrez 驗證
🔬 4 篇 L2 文獻 經多層 sub-agent 獨立評估
🇹🇼 含台灣社群分析L10c PTT / Dcard / Mobile01
aggregated_at: 2026-06-01 claim_version: v24 engine_version: v1.0 claim_id: CLM-COND-osteoarthritis-INT-s-adenosylmethionine-001
查看 ClaimReview 結構化資料 (JSON-LD)
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