Fish oil is one of the most popular omega-3 supplements. It is often used by people who want to support heart health, brain function, and overall wellness. However, choosing the best fish oil supplement can be confusing because products vary in EPA and DHA levels, source, purity, serving size, and price.
A quality fish oil should provide a meaningful amount of EPA and DHA rather than simply listing a large amount of total fish oil on the front of the bottle. It should also come from a reputable manufacturer with appropriate quality testing.
In this guide, we explain what to look for when shopping for fish oil and how to compare some of the most popular options.
1. What Makes the Best Fish Oil?
The best fish oil is not necessarily the product with the biggest capsule or highest total oil amount.
Instead, look at several important factors:
- EPA and DHA content: These are the primary omega-3 fatty acids found in fish oil.
- Purity: Look for products that provide quality and contaminant testing information.
- Freshness: Fish oil can oxidize, so proper manufacturing and storage matter.
- Serving size: Some products require several softgels to provide their stated omega-3 amount.
- Form: Fish oil may be sold as triglyceride, re-esterified triglyceride, or ethyl ester forms.
- Third-party testing: Independent testing can provide additional confidence in quality.
Therefore, always compare the actual EPA and DHA content rather than relying only on the words “1000 mg fish oil.”
2. Why Are EPA and DHA Important?
EPA and DHA are long-chain omega-3 fatty acids. They are found naturally in fatty fish such as salmon, sardines, mackerel, and anchovies.
Omega-3s are important components of cell membranes and play roles in several biological processes.
Research has particularly examined omega-3 intake in relation to cardiovascular health, triglyceride levels, brain health, and inflammation.
However, supplements are not a substitute for a balanced diet or medical treatment. People with specific health conditions should speak with a healthcare professional before starting a supplement.
3. How Much Fish Oil Should You Take?
There is no single fish oil dosage that is ideal for everyone.
The amount of EPA and DHA needed depends on factors such as dietary intake, individual health goals, and medical advice.
For general supplementation, consumers should carefully read the Supplement Facts label and identify how much EPA + DHA each serving provides.
Do not confuse the total fish oil amount with the combined EPA and DHA amount.
For example, a capsule labeled “1,000 mg fish oil” may contain considerably less than 1,000 mg of combined EPA and DHA.
4. Best Fish Oil Supplements to Consider
Below are several well-known fish oil categories and products worth researching when comparing supplements.
Nordic Naturals Ultimate Omega
Nordic Naturals is widely recognized in the omega-3 supplement market. Its Ultimate Omega line focuses on providing concentrated EPA and DHA in softgel form.
It can be a useful option for shoppers who prioritize a reputable omega-3 brand and a concentrated serving.
Sports Research Triple Strength Omega-3
Sports Research offers concentrated omega-3 products designed for consumers who want more EPA and DHA per serving.
This type of product can be convenient because higher concentration may reduce the number of capsules required each day.
Carlson Elite Omega-3
Carlson has a long history in the omega-3 supplement category. Its products emphasize omega-3 concentration and quality.
It is another brand worth comparing if freshness, sourcing, and EPA/DHA levels are important to you.
Nature Made Fish Oil
Nature Made is a widely available supplement brand with several fish oil options.
Its products can appeal to shoppers who prefer an established mainstream supplement company and easy availability.
NOW Foods Omega-3 Fish Oil
NOW Foods offers several omega-3 formulas at different concentrations and price points.
Viva Naturals Omega-3 Fish Oil
Viva Naturals offers concentrated omega-3 supplements with a focus on EPA and DHA.
This can make it an interesting choice for shoppers who want to compare value while still focusing on EPA and DHA content.
Its products may appeal to consumers looking for a higher-potency fish oil without moving into specialized prescription products.
Thorne Super EPA
Thorne is known for its premium supplement positioning. Super EPA provides EPA and DHA in a concentrated formula.
It may be worth considering for shoppers who prioritize brand reputation and quality-focused supplementation.
Shopping tip: Before purchasing, compare the current Supplement Facts label, EPA/DHA amounts, serving size, price per serving, and available quality certifications.
5. How to Compare Fish Oil Supplements
Comparing fish oil products by bottle price alone can lead to poor buying decisions.
Instead, calculate the cost per serving and consider how much EPA and DHA you receive.
For example:
Cost per EPA+DHA amount = product price ÷ total EPA+DHA provided
This gives you a more useful comparison between concentrated and lower-concentration products.
Also check whether the bottle contains 30, 60, 90, or more servings.
A cheaper bottle may not actually be cheaper if you need multiple capsules to achieve the same EPA and DHA intake.
6. Should You Choose Fish Oil or Algae Oil?
Fish oil is not the only source of supplemental omega-3.
Algae oil is another option and is particularly relevant for people looking for a non-fish source of omega-3. Many algae oil products primarily provide DHA, although some formulas also contain EPA.
Fish oil may be preferable for shoppers seeking both EPA and DHA in one supplement.
The best choice depends on dietary preferences, nutritional goals, and individual circumstances.
7. What Should You Look for on the Label?
Before buying the best fish oil supplement, check these details:
EPA and DHA
Look for the exact amount of EPA and DHA per serving.
Serving Size
Check whether the stated amount requires one capsule or several capsules.
Source
Many fish oil supplements are made from small oily fish such as anchovies and sardines.
Quality Testing
Look for information about third-party testing, purity, and oxidation control.
Expiration Date
Fish oil is sensitive to oxidation. Choose products with appropriate expiration information and store them according to the manufacturer’s instructions.
Added Ingredients
Some fish oil supplements contain flavoring, antioxidants, or other ingredients. Check the complete label if you have allergies or dietary restrictions.
8. How to Reduce Fishy Burps
One common complaint about fish oil is a fishy aftertaste or burping.
Several practical strategies may help:
- Take fish oil with a meal.
- Follow the manufacturer’s storage instructions.
- Consider a product with a lemon or other flavoring if you dislike the taste.
- Keep the product properly stored.
- Avoid using a supplement that smells strongly rancid or appears spoiled.
If digestive discomfort continues, stop using the product and discuss alternatives with a healthcare professional.
9. Who Should Avoid Fish Oil?
Fish oil is not appropriate for everyone without professional guidance.
People taking medications that affect blood clotting, people preparing for certain medical procedures, and those with allergies or other medical concerns should discuss fish oil supplementation with a healthcare professional.
High-dose omega-3 supplementation can have effects that differ from ordinary dietary intake.
Therefore, more is not automatically better.
10. Can You Get Omega-3 From Food?
Absolutely.
Fatty fish can be an excellent dietary source of EPA and DHA.
Examples include:
- Salmon
- Sardines
- Mackerel
- Herring
- Anchovies
- Trout
The American Heart Association recommends eating fish, particularly fatty fish, as part of a heart-healthy eating pattern.
A supplement can be useful for some people, but it should complement—not replace—a nutritious diet.
11. Best Fish Oil Buying Checklist
Before you click the buy button, ask:
Does it provide a useful amount of EPA and DHA?
Does the manufacturer provide quality information?
Is the serving size practical?
Does the price make sense per serving?
Does it fit my dietary needs?
Can I take it safely with my current medications?
This simple checklist can help you avoid choosing a product based solely on marketing claims.
12. Where Can You Buy Fish Oil?
You can compare current prices, serving sizes, customer reviews, and product labels on major online retailers.
For Amazon shoppers, you can browse the current selection here:
Check Fish Oil Supplements on Amazon
| Image | Product | Features | Price |
Our Pick
1  | Nordic Naturals | High-Potency Omega-3 Fish Oil Supplement with EPA & DHA – Promotes Brain & Heart Health – Non-GMO – 45 Servings | |
2  | Sports Research® Omega-3 Fish Oil | Always Fresh Never Fishy | 690mg EPA 260mg DHA per Softgel · Heart & Brain Health* · MSC Certified | |
3  | Carlson Elite Omega-3 | Omega-3 Fatty Acids Including EPA and DHA; Wild-Caught Fish Oil Supplement; Sustainably Sourced Omega 3 Fish Oil Capsules | |
4  | NOW Foods Supplements | Omega-3 180 EPA / 120 DHA, Molecularly Distilled, Cardiovascular Support*, 200 Softgels | |
5  | Nature Made Fish Oil | Omega 3 Fish Oil for Healthy Heart Support, Gluten Free, Dairy Free, 115 Day Supply | |
6  | Viva Naturals Omega-3 Fish Oil | Supplement for Women and Men – 2500 mg Triple Strength Fish Oil per Serving with Omega 3 Fatty Acids Including EPA, DHA DPA – 180 Pescatarian-Friendly Softgels | |
7  | Thorne Super EPA | Fish Oil Liquid Supplement with EPA & DHA – Supports Brain, Skin, Joint & Heart Health* – Lemon Berry – Third-Party Certified – Gluten, Dairy & Soy-Free – 40 Servings |
Disclosure: This article may contain affiliate links. If you purchase through an affiliate link, we may earn a commission at no additional cost to you.
Final Thoughts: Which Fish Oil Is Best?
The best fish oil supplement depends on what you need from the product.
Rather than choosing based on bottle size or price alone, focus on EPA and DHA content, quality testing, freshness, serving size, and overall value.
Nordic Naturals, Sports Research, Carlson, Nature Made, NOW Foods, Viva Naturals, and Thorne are examples of established brands that consumers may want to compare.
Most importantly, remember that supplements work best as part of an overall healthy lifestyle. If you have a medical condition or take medication, consult your healthcare professional before adding a concentrated omega-3 supplement to your routine.
