is it safe to consume glutathione tablets Nutricost Capsules 500mg, 240 Capsules Glutathione Tablets Vs Glutathione Injections:

A 2015 study used 150mg of a similarly administered form of glutathione, which is a good 33% higher than the Quicksilver dosage.22 But there's a silver lining in that Quicksilver is easy to titrate up as needed, and just an additional pump will get you up to that 150mg threshold (though at the expense of shrinking its use life)

10.48550/arXiv.0902.2850 ArXiv09022850 Astro-Ph

The caveat to IV glutathione is that it has the highest risk of side effects

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doi:10.1007/978-94-007-7500-8_8

But duration still matters especially if you're recovering from injury or using it to address chronic conditions like gut inflammation