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Head-to-head evidence comparison — which supplement is right for you?
Astragalus vs Iron: Astragalus has the stronger overall evidence (5 vs 9/10); they're alternatives for boost daily energy — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Astragalus wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Probably helps
3 of 6 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
11 of 15 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Astragalus and Iron have evidence — compare verdict strength side-by-side.
500-1500mg extract
With meals
Standardized root extract
18-45mg elemental iron for deficiency (varies by severity)
On empty stomach if tolerated, Away from tea, coffee, dairy
Ferrous bisglycinate (gentle, well-absorbed) or iron protein succinylate
4-8 weeks
4-8 weeks
2-4 weeks
4-8 weeks
4-12 weeks
Efficacy and potential pharmacological mechanism of Astragalus-Salvia miltiorrhiza combination in diabetic nephropathy: integrating meta-analysis, network pharmacology, molecular docking, and experimental validation
Renal failure (2025) · Meta analysis · n=1443
Meanwhile, when the treatment duration exceeds 12 weeks, AS demonstrated a significant reduction in fasting blood glucose levels, indicating a time-dependent effect.
Evaluating efficacy and mechanism of traditional Chinese medicine in diabetes treatment: a meta-analysis and network pharmacology study
Frontiers in endocrinology (2025) · Meta analysis · n=7318
TCM has demonstrated considerable effectiveness in managing diabetes.
Efficacy and safety of astragalus polysaccharides in patients with malignant tumors: A systematic review and meta-analysis
Naunyn-Schmiedeberg's archives of pharmacology (2025) · Meta analysis · n=2648
No substantial distinctions were noted between the two groups in terms of CD8 + T cell count [MD = -1.74, 95% CI (-4.66, 1.17), P = 0.242].
Daily oral iron supplementation during pregnancy
The Cochrane database of systematic reviews (2024) · Meta analysis · n=48971
There is probably little to no difference in maternal death (2 versus 4 events, RR 0.57, 95% CI 0.12 to 2.69; 3 trials, 14,060 women; moderate-certainty evidence).
The Prevalence of Anemia among Pregnant Women in China: A Systematic Review and Meta-Analysis
Nutrients (2024) · Meta analysis · n=722
The results showed that the prevalence of anemia, ID, and IDA among pregnant women in China were 30.7% (95% CI: 26.6%, 34.7%), 45.6% (95% CI: 37.0%, 54.2%), and 17.3% (95% CI: 13.9%, 20.7%), respectively.
Treatment for women with postpartum iron deficiency anaemia
The Cochrane database of systematic reviews (2024) · Meta analysis · n=572
Intravenous iron versus oral iron supplementation The evidence is very uncertain about the effect of intravenous iron on mortality (risk ratio (RR) 2.95, 95% confidence interval (CI) 0.12 to 71.96; P = 0.51; I² = not applicable; 3 RCTs; 1 event; 572 women; very low-certainty evidence).
Based on multiple meta-analyses showing adjuvant benefits for diabetic conditions. Effects appear time-dependent (>12 weeks). Studies primarily used combination therapy rather than astragalus alone.
Based on meta-analyses showing hemoglobin improvements of 2.01-5.30 g/dL in iron deficient populations. Higher doses show diminishing returns with increased GI side effects. Effectiveness varies significantly by baseline iron status and form used.
AI-estimated from published studies. Interpret as directional guidance.
Astragalus has a higher evidence score (5/10 vs 9/10) and wins in 2 of 3 categories.
For boost daily energy, Iron has a higher relevance score (90 vs 25).
No known interactions between Astragalus and Iron have been documented in our database. However, always consult a healthcare provider before combining supplements.
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The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.