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Head-to-head evidence comparison — which supplement is right for you?
Calcium wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
7 of 8 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
Shared outcomes (1)
Outcomes where both Calcium and Pumpkin Seed Oil have evidence — compare verdict strength side-by-side.
1000–1200mg daily (split doses)
Split doses with meals, 500mg with breakfast, 500mg with dinner
Calcium Citrate
1000–2000 mg daily (oral capsule) or 3 g/day for cardiovascular benefit
With meals (lunch or dinner), Split dose morning and evening with food
Cold-pressed softgel capsule
6-24 months
12-36 months
Throughout pregnancy
Within days of starting
4-12 weeks
8-12 weeks
6 weeks
8-12 weeks
Effects of combined calcium and vitamin D supplementation on osteoporosis in postmenopausal women: a systematic review and meta-analysis of randomized controlled trials.
Food & Function (2020) · Meta analysis · n=12000
Combined calcium and vitamin D significantly improved lumbar spine BMD in postmenopausal women
Association Between Calcium or Vitamin D Supplementation and Fracture Incidence in Community-Dwelling Older Adults: A Systematic Review and Meta-analysis.
JAMA (2017) · Meta analysis · n=51145
33 trials involving 51,145 participants were analyzed
Vitamin D and Calcium for the Prevention of Fracture: A Systematic Review and Meta-analysis.
JAMA Network Open (2019) · Meta analysis · n=51419
Meta-analysis of 11 randomized clinical trials with 51,419 participants
Evaluation of the Safety and Effectiveness of Nutritional Supplements for Treating Hair Loss: A Systematic Review.
JAMA Dermatology (2023) · Systematic review
30 articles were included comprising 17 RCTs, 11 clinical studies, and 2 case series in individuals without known nutritional deficiency
Pumpkin seed oil (Cucurbita pepo) versus tamsulosin for benign prostatic hyperplasia symptom relief: a single-blind randomized clinical trial.
BMC Urology (2021) · Rct · n=73
Both tamsulosin and pumpkin seed oil (360 mg twice daily) produced significant decreases in IPSS and improvements in quality of life over 3 months
The effects of pumpkin seed oil supplementation on arterial hemodynamics, stiffness and cardiac autonomic function in postmenopausal women.
Complementary Therapies in Clinical Practice (2019) · Rct · n=23
Augmentation index (AIx), brachial and central systolic blood pressure significantly decreased following PSO (3 g/day for 6 weeks) but not placebo (P<0.05)
Based on meta-analysis of 59 RCTs showing 0.6-1.8% BMD increases. Requires vitamin D co-supplementation for optimal effect. Effectiveness plateaus beyond 1200mg daily.
Based on RCT showing PSO 360mg twice daily improved IPSS scores but was less effective than tamsulosin. Conservative estimates given limited dose-response data and small study size (n=73).
AI-estimated from published studies. Interpret as directional guidance.
Calcium has a higher evidence score (8.8/10 vs 6.5/10) and wins in 3 of 3 categories.
For menopause support, Calcium has a higher relevance score (85 vs 60).
No known interactions between Calcium and Pumpkin Seed Oil have been documented in our database. However, always consult a healthcare provider before combining supplements.