Best SAM-e
The best sam-e we track, ranked by real cost-per-dose — not paid placements. Across 14 brands, 2 are third-party tested in a public registry.
Updated October 2026prices checked what’s changed
How much does SAM-e cost?
SAM-e costs a median $0.50 per serving — the cheapest of the 24 we can price per dose is $0.22 per serving, or $0.17/day to reach the commonly-studied 800 mg dose. Prices checked October 2026.
Best sam-e for a specific goal
Ranked across 24 products · prices checked Oct 10, 2026
3rd-party testedBulkSupplements.com Same Powder - S-Adenosyl-L-Methionine
NSF Certified for Sport brand at $0.35 per serving.
How we rank
We rank by cost-per-dose — price ÷ servings, normalized to the daily dose (800 mg/day) — so bottle sizes and strengths compare fairly. Prices are scraped at publication and re-checked when the catalog refreshes (see the “Prices checked” stamp above). There is no paid placement and no kickback for ordering. Full methodology · Editorial standards.
When cheapest ≠ best value
The cheapest bottle isn’t automatically the best value: a low per-bottle price usually just means fewer servings or a smaller dose per serving. That is exactly what cost per dose normalises, which is why the ranking above is ordered by it rather than by sticker price. A bigger bottle isn’t automatically cheaper per dose either — this list already ranks by cost per dose, so a larger count only wins if it truly costs less per serving. Compare SAM-e forms.
Our data on this: how much the big bottle saves per serving · the gummy tax · the form premium · the price spread.
Full ranking by cost per dose
Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 24 shown.
- See offer$0.22per serving$0.36 / 800 mg
- See offer$0.25per serving1.1× #1$0.17 / 800 mg
- See offer$0.27per serving1.2× #1$0.18 / 800 mg
- See offer$0.31per serving1.4× #1$0.49 / 800 mg
- See offer$0.31per serving1.4× #1$0.22 / 800 mg
- See offer$0.33per serving1.5× #1$1.31 / 800 mg
- See offer$0.33per serving1.5× #1$0.18 / 800 mg
- See offer$0.33per serving1.5× #1$0.67 / 800 mg
- See offer#9BulkSupplements.com Same Powder - S-Adenosyl-L-Methionin…
powder · 400mg · 62 servings · $21.97
NSF Sport$0.35per serving1.6× #1$0.71 / 800 mg - See offer$0.40per serving1.8× #1$0.64 / 800 mg
- See offer$0.40per serving1.8× #1$0.32 / 800 mg
- See offer$0.48per serving2.2× #1$0.97 / 800 mg
- See offer$0.52per serving2.4× #1$1.05 / 800 mg
- See offer$0.58per serving2.6× #1$2.34 / 800 mg
- See offer$0.59per serving2.7× #1$1.19 / 800 mg
- See offer$0.60per serving2.7× #1$1.20 / 800 mg
- See offer$0.62per serving2.8× #1$1.25 / 800 mg
- See offer$0.67per serving3.0× #1$1.34 / 800 mg
- See offer$0.69per serving3.1× #1$1.39 / 800 mg
- See offer$0.80per serving3.6× #1$1.60 / 800 mg
See also: SAM-e basics · all best-value rankings · sam-e cost-per-dose breakdown
SAM-e brands we compare — which are third-party tested?
2 of the 14 brands ranked above appear in an independent certifier's own public registry. A certification confirms the label matches the contents — it says nothing about how well the supplement works, and an uncertified brand is not automatically worse.
Frequently asked
How much does SAM-e cost?+
The cheapest sam-e we track is $0.22 per serving ($39.95 for 180 servings), against a typical $0.50 per serving across the 24 we can price per dose — about $6.66 a month at the cheapest. That's real cost per dose from live Amazon US prices as of October 2026, not the sticker price.
What is the best-value SAM-e supplement?+
500mg SAM-e Supplement - High Strength 500mg S-Adenosyl-L-Methionine Capsules… — $0.22 per serving ($39.95 for 180 servings), the lowest cost-per-dose sam-e in our Amazon US catalog as of October 2026.
How much does SAM-e cost per day?+
The cheapest sam-e we track works out to $0.22 per serving, against a typical $0.50 per serving across the 24 we can price per dose; to reach the commonly-studied 800 mg/day dose the cheapest is $0.17/day. Retailers and review sites list a price and a serving size but rarely divide it out — this is what a day actually costs, as of October 2026.
What is the typical cost per dose for SAM-e?+
About $0.50 per serving across the 24 sam-e products we can price per dose (combination products are left out — their single label dose belongs to whichever ingredient the product is built around) — the cheapest we track is $0.22 per serving, with most falling between $0.33 and $0.68.
What's the cheapest effective SAM-e?+
To reach the commonly-studied 800 mg/day dose, 1200 MG SAM e Supplement for Brain is the best value at $0.17 per day — cheaper than bottles that look low-priced per serving but are underdosed.
What is the highest-quality SAM-e supplement?+
Of the 14 sam-e brands ranked here, 2 hold a third-party certification we could verify in a public registry: BulkSupplements.com (NSF Certified for Sport), Nature Made (USP Verified). Certification means an independent lab confirmed the label matches the contents and screened for contaminants — it does not rate how well the supplement works. The cheapest certified option is BulkSupplements.com Same Powder - S-Adenosyl-L-Methionine at $0.35 per serving.
Which SAM-e brands are third-party tested?+
BulkSupplements.com — NSF Certified for Sport; Nature Made — USP Verified. We only count a brand as tested when it appears in the certifier's own public registry (USP Verified, NSF Certified for Sport, Informed Choice), never on a claim printed on the label. The remaining 12 brands on this page have no certification we could verify.
Which SAM-e is the top rated?+
We don't republish marketplace star ratings — they belong to the retailer, they move constantly, and a 4.6 average tells you nothing about what is in the capsule. The two things you can verify are what a dose costs and whether an independent lab checked the label. On both counts, BulkSupplements.com Same Powder - S-Adenosyl-L-Methionine stands out: NSF Certified for Sport certified at $0.35 per serving.
Independent testing
2 of 14 tracked SAM-e brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
References & sources
- SAM-e — Health Professional fact sheet — NIH Office of Dietary Supplements
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.