Visual Check: Look for cloudiness, discoloration, or residue inside the capsule. While some high-quality, pure fish oils may become thicker or even semi-solid when cold, this does not harm the oil.
How to Test Fish Oil Capsules Freshness by Breaking Open
Understanding the Difference: Expiration vs. The primary concern past this date is the depletion of the active omega-3 compounds, meaning you may not be getting the advertised dose of EPA and DHA.
The Role of Oxidation While the expiration date is a guideline, the actual state of the oil inside the capsule is the true indicator of quality. Instead, fish oil degrades gradually over time.
How to Test Fish Oil Capsules Freshness by Breaking Open
If you find your refrigerated capsules too hard to ingest, you can let them sit at room temperature for a few minutes or swallow them with a larger gulp of water. However, this is not an immediate expiration date where the product becomes toxic the day after.
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