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Cheapest Omega-3 Fatty Acids on iHerb

Ranked by real cost per 100 mg of Omega-3 Fatty Acids — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

The priciest option here costs about 4.7× more per 100 mg of Omega-3 Fatty Acids than the best-value pick Barlean's. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Barlean's, Organic Lignan Flax Oil, 12 fl oz (355 ml)
Barlean's, Organic Lignan Flax Oil, 12 fl oz (355 ml)
Barlean's
7,230 mg2421.990.013View on iHerb →
2
Manitoba Harvest, Hemp Seed Oil, Cold Pressed, 12 fl oz (355 ml)
Manitoba Harvest, Hemp Seed Oil, Cold Pressed, 12 fl oz (355 ml)
Manitoba Harvest
2,772 mg248.920.013View on iHerb →
3
Manitoba Harvest, Organic Hemp Seed Oil, 16.9 fl oz (500 ml)
Manitoba Harvest, Organic Hemp Seed Oil, 16.9 fl oz (500 ml)
Manitoba Harvest
2,772 mg3315.150.017View on iHerb →
4
Nutricost, Omega-3, 120 Softgels
Nutricost, Omega-3, 120 Softgels
Nutricost
2,500 mg4020.950.021View on iHerb →
5
Onnit, Krill Oil, 60 Softgels
Onnit, Krill Oil, 60 Softgels
Onnit
240 mg302.000.028View on iHerb →
6
Natural Factors, SeaRich Omega-3 with Vitamin D3, HI Potency, Delicious Lemon Meringue, 6.76 fl oz (200 ml)
Natural Factors, SeaRich Omega-3 with Vitamin D3, HI Potency, Delicious Lemon Meringue, 6.76 fl oz (200 ml)
Natural Factors
2,550 mg4028.800.028View on iHerb →
7
Nutricost, Omega-3, 90 Softgels (833 mg per Softgel)
Nutricost, Omega-3, 90 Softgels (833 mg per Softgel)
Nutricost
2,500 mg3022.000.029View on iHerb →
8
Natural Factors, RxOmega-3 Ultra Strength, 150 Softgels (1,075 mg per Softgel)
Natural Factors, RxOmega-3 Ultra Strength, 150 Softgels (1,075 mg per Softgel)
Natural Factors
2,150 mg7547.570.030View on iHerb →
9
Natural Factors, Rx Omega-3, 240 Softgels (630 mg per Softgel)
Natural Factors, Rx Omega-3, 240 Softgels (630 mg per Softgel)
Natural Factors
1,260 mg12044.770.030View on iHerb →
10
Micro Ingredients, Omega-3 Fish Oil, Lemon, 240 Softgels (1,000 mg per Softgels)
Micro Ingredients, Omega-3 Fish Oil, Lemon, 240 Softgels (1,000 mg per Softgels)
Micro Ingredients
1,020 mg8024.990.031View on iHerb →
11
Natural Factors, RxOmega-3 Ultra Strength with Vitamin D3, 150 Softgels
Natural Factors, RxOmega-3 Ultra Strength with Vitamin D3, 150 Softgels
Natural Factors
2,150 mg7549.670.031View on iHerb →
12
Natural Factors, SeaRich Omega-3, Delicious Lemon Meringue, 6.76 fl oz (200 ml)
Natural Factors, SeaRich Omega-3, Delicious Lemon Meringue, 6.76 fl oz (200 ml)
Natural Factors
1,390 mg4018.000.032View on iHerb →
13
Natural Factors, Rx Omega-3, 120 Softgels (630 mg per Softgel)
Natural Factors, Rx Omega-3, 120 Softgels (630 mg per Softgel)
Natural Factors
1,260 mg6026.570.035View on iHerb →
14
Animal, Advanced Omega-3 & EFAS Pill Packs, 30 Packs
Animal, Advanced Omega-3 & EFAS Pill Packs, 30 Packs
Animal
3,593 mg3038.950.036View on iHerb →
15
Natural Factors, RxOmega-3 Ultra Strength, 60 Softgels (1,075 mg per Softgel)
Natural Factors, RxOmega-3 Ultra Strength, 60 Softgels (1,075 mg per Softgel)
Natural Factors
2,150 mg3025.170.039View on iHerb →
16
Natural Factors, RxOmega-3 Ultra Strength with Vitamin D3, 60 Softgels
Natural Factors, RxOmega-3 Ultra Strength with Vitamin D3, 60 Softgels
Natural Factors
2,150 mg3026.570.041View on iHerb →
17
Carlson, Wild Norwegian, Elite Omega-3 Gems®, Natural Lemon, 180 Soft Gels
Carlson, Wild Norwegian, Elite Omega-3 Gems®, Natural Lemon, 180 Soft Gels
Carlson
1,600 mg9061.970.043View on iHerb →
18
Metabolic Nutrition, Omega 369, 180 Softgels (1,200 mg per Softgel)
Metabolic Nutrition, Omega 369, 180 Softgels (1,200 mg per Softgel)
Metabolic Nutrition
1,353 mg6036.990.046View on iHerb →
19
Ronnie Coleman, Vital Edition, Omega-3 XS®, 120 Softgels
Ronnie Coleman, Vital Edition, Omega-3 XS®, 120 Softgels
Ronnie Coleman
680 mg6019.990.049View on iHerb →
20
Metabolic Nutrition, Omega 369, 90 Softgels (1,200 mg per Softgel)
Metabolic Nutrition, Omega 369, 90 Softgels (1,200 mg per Softgel)
Metabolic Nutrition
1,353 mg3019.990.049View on iHerb →
21
Paradise Herbs, Omega-Sure®, Premium Omega-3 Fish Oil, 120 Pesco Vegetarian Softgels
Paradise Herbs, Omega-Sure®, Premium Omega-3 Fish Oil, 120 Pesco Vegetarian Softgels
Paradise Herbs
1,560 mg6047.990.051View on iHerb →
22
CATALO, Extra Omega-3 , 180 Softgels
CATALO, Extra Omega-3 , 180 Softgels
CATALO
1,400 mg9071.340.057View on iHerb →
23
Nordic Naturals, ProEFA®-3-6-9, Lemon, 8 fl oz (237 ml)
Nordic Naturals, ProEFA®-3-6-9, Lemon, 8 fl oz (237 ml)
Nordic Naturals
1,270 mg4834.800.057View on iHerb →
24
Natural Factors, RxOmega-3 Mini-Gels, 60 Softgels (530 mg per Softgel)
Natural Factors, RxOmega-3 Mini-Gels, 60 Softgels (530 mg per Softgel)
Natural Factors
1,060 mg3018.870.059View on iHerb →
25
Paradise Herbs, Omega-Sure®, Premium Omega-3 Fish Oil, 60 Pesco Vegetarian Softgels
Paradise Herbs, Omega-Sure®, Premium Omega-3 Fish Oil, 60 Pesco Vegetarian Softgels
Paradise Herbs
1,560 mg3027.990.060View on iHerb →

How we rank Omega-3 Fatty Acids

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.