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Head-to-head evidence comparison — which supplement is right for you?
Nicotinamide Riboside vs Pumpkin Seed Oil: Nicotinamide Riboside has the stronger overall evidence (5.5 vs 4.5/10); they're alternatives for support heart health — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Nicotinamide Riboside wins 3 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Too few graded studies
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
1000 mg daily (the dose used in most outcome trials; lower doses raise blood NAD+ but have not been tested for clinical effects)
Morning with breakfast, Split dosing (morning and midday) for doses above 500 mg
Nicotinamide Riboside Chloride capsules or powder
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
and 1 more not shown
and 1 more not shown
1–2 weeks
4–8 weeks
8–16 weeks
4–8 weeks
4-12 weeks
8-12 weeks
6 weeks
8-12 weeks
NAD⁺ supplementation for anti-aging and wellness: A PRISMA-guided systematic review of preclinical and clinical evidence.
Ageing Research Reviews (2026) · Systematic review
Reviewed 113 intervention studies published from 2010 to October 2025: 33 in humans (28 of them randomised) and 80 in rodents, covering NR, NMN and injected NAD+.
The Effect of Nicotinamide Mononucleotide and Riboside on Skeletal Muscle Mass and Function: A Systematic Review and Meta-Analysis.
Journal of Cachexia, Sarcopenia and Muscle (2025) · Meta analysis
Systematic review and meta-analysis of placebo-controlled RCTs of NMN or NR in adults with a mean age of 60.9 to 83 years, looking at muscle mass, grip strength, gait speed and other physical performance tests.
Effects of NAD+ precursor supplementation on glucose and lipid metabolism in humans: a meta-analysis.
Nutrition & Metabolism (2022) · Meta analysis · n=14750
Meta-analysis of 40 clinical studies (14,750 participants) of four NAD+ precursors: nicotinamide riboside, nicotinamide mononucleotide, nicotinic acid (niacin) and nicotinamide.
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)
The points come from one 8-week RCT in overweight adults, where 100, 300 and 1,000 mg a day raised whole-blood NAD+ by 22%, 51% and 142%, with no difference in adverse events versus placebo or between doses (PMID 31278280). Other trials at 1 g a day found similar rises, 2.6-fold in older adults with mild cognitive impairment (PMID 37994989). No trial compared doses above 1,000 mg, so no optimal dose is plotted. The ceiling is the 2,000 mg a day that a 12-week RCT in obese men found safe (PMID 29992272). The NR-SAFE trial also found 3,000 mg a day well tolerated over 4 weeks in 10 people with Parkinson's disease (PMID 38016950).
AI-estimated from published studies. Interpret as directional guidance.
Nicotinamide Riboside has a higher evidence score (5.5/10 vs 4.5/10) and wins in 3 of 3 categories.
For support heart health, Pumpkin Seed Oil has a higher relevance score (65 vs 62).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
NAD+ boosters raise a biomarker — but the anti-aging benefits aren’t proven in humans. The honest read.
The popular one (saw palmetto) mostly fails in rigorous trials; beta-sitosterol is the better bet.
The proven options (minoxidil, finasteride) vs adjuncts and weak naturals — tiered for pattern hair loss.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.