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I've opened a blister and I found a capsule that is discoloured, a darker colour. Is that normal?Updated 3 months ago

Yes that's normal!  Because we have ultra clean formulations, we don't use stabilisers that prevent discolouration when capsules are exposed to heat or humidity.

Discolouration means it has absorbed moisture from the air (common with choline-containing supplements).  This can happen even when they are securely packaged in a blister pack.  If you want to prevent that from happening, store them in the fridge.

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