Using expired b12 could certainly result in you not receiving the proper dosage due to deterioration as you now likely suspect given your setback
Glutathione Cream Side Effects While glutathione creams are generally considered safe for topical use, some individuals may experience mild side effects, such as: Skin Sensitivity: Some people may develop skin sensitivity or mild irritation when using glutathione creams
And no safety concerns were reported during a But a Lutein and zeaxanthin supplements are generally regarded as safe (GRAS) by the The European Food Safety Authority (ESFA) has approved a Though lutein and zeaxanthin supplements have very few reported side effects, more research is needed to evaluate the potential side effects of very high intakes
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In: Gupta DK, Palma JM, Corpas FJ (eds) Redox state as a central regulator of plant-cell stress responses