are glutathione suppositories effective 9 Health Benefits of Best Glutathione Supplement: What's Your
Description
The short answer is yesand in fact, combining them can be highly beneficial

People who have celiac disease or regularly take acid reducing drugs might consider having B12 injections to compensate for their diminished ability to absorb B12 from their foods naturally

After 28 days of use, potency may decline and contamination risk increases

(PubMed) Tiemeier H, van Tuijl HR, Hofman A, Meijer J, Kiliaan AJ, Breteler MM

Source and purity are not optional
