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Head-to-head evidence comparison — which supplement is right for you?
B-Complex vs Teriparatide: B-Complex has the stronger overall evidence (6.5 vs 7/10); they're alternatives for bone health — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
B-Complex wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Probably helps
5 of 8 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
1 capsule daily (per label)
Morning with breakfast
Methylated B-complex (methylcobalamin, methylfolate)
20 micrograms once daily by subcutaneous injection (the approved osteoporosis dose; PRESCRIPTION ONLY)
any
Subcutaneous injection (prefilled pen)
2-4 weeks
4-8 weeks
Immediate
Over ~18-24 months of daily use
Over ~18-24 months
Detectable by ~3 months
Hours after each dose
Dosage exploration of combined B-vitamin supplementation in stroke prevention: a meta-analysis and systematic review
The American journal of clinical nutrition (2024) · Meta analysis · n=76664
In areas without and with partial folic acid fortification, combined B-vitamin supplementation significantly reduced the risk of stroke by 34% [RR: 0.66; 95% confidence interval (CI): 0.50, 0.86] and 11% (RR: 0.89; 95% CI: 0.79, 1.00), respectively.
A Comparative Study Evaluating the Effectiveness of Folate-Based B Vitamin Intervention on Cognitive Function of Older Adults under Mandatory Folic Acid Fortification Policy: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Nutrients (2024) · Meta analysis · n=42768
The meta-analysis on the effects of folate-based B vitamin supplementation on cognitive function showed a significant overall impact (Z = 3.84; p = 0.0001; SMD, 0.18; 95% CI, 0.09, 0.28).
A Systematic Review and Meta-Analysis of B Vitamin Supplementation on Depressive Symptoms, Anxiety, and Stress: Effects on Healthy and 'At-Risk' Individuals
Nutrients (2019) · Meta analysis · n=2015
Regarding individual facets of mood, B vitamin supplementation benefited stress (n = 958, SMD = 0.23, 95% CI = 0.02, 0.45, p = 0.03).
Effect of parathyroid hormone (1-34) on fractures and bone mineral density in postmenopausal women with osteoporosis.
N Engl J Med (2001) · Rct · n=1637
Pivotal Fracture Prevention Trial: 1637 postmenopausal women with prior vertebral fractures randomized to PTH(1-34) 20 or 40 microg/day or placebo, median 21 months
Effects of teriparatide and risedronate on new fractures in post-menopausal women with severe osteoporosis (VERO): a multicentre, double-blind, double-dummy, randomised controlled trial.
Lancet (2018) · Rct · n=1360
Head-to-head double-blind, double-dummy RCT of teriparatide 20 microg/day vs risedronate 35 mg/week in 1360 women with severe osteoporosis over 24 months
Teriparatide or alendronate in glucocorticoid-induced osteoporosis.
N Engl J Med (2007) · Rct · n=428
18-month randomized, double-blind, controlled head-to-head trial in 428 patients with glucocorticoid-induced osteoporosis
Multiple meta-analyses show small but statistically significant benefits for cognitive function in older adults and stroke prevention populations. Effect sizes are modest (SMD ~0.15-0.18). Benefits may be more pronounced in B-vitamin deficient populations.
AI-estimated from published studies. Interpret as directional guidance.
B-Complex has a higher evidence score (6.5/10 vs 7/10) and wins in 2 of 3 categories.
For bone health, Teriparatide has a higher relevance score (85 vs 70).
No known interactions between B-Complex and Teriparatide have been documented in our database. However, always consult a healthcare provider before combining supplements.
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When to take what, with or without food, and which supplements compete vs pair well.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.