does glutathione have sulfa in it Allergy: What Drugs to Avoid (and What’s Usually Safe) Glutathione - Wikipedia

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While no evidence directly links BPC-157 to cancer development or progression, individuals with cancer history, undiagnosed masses, or strong family history of aggressive cancers should exercise caution

Gobburu JV, et al

You should be able to see through it

When you swallow a standard glutathione capsule or tablet, stomach acid and digestive enzymes begin breaking it down into its amino acid building blocks before it can be absorbed as glutathione