should you take glutathione supplements Supplement 1,000mg Per Serving, 98% Purity | Plus Vitamin C 500mg, Active Reduced Form (GSH) Independent testing finds six of

The 0.9% concentration is well within the threshold of clinical standards for preservative use in injectable solutions without adverse effects on cell viability or peptide efficacy.[12] Microbial efficacy testing demonstrates no contamination after 30 withdrawals at 4C for up to 60 days.[13][14] 2.2 Stability in Peptide Solutions Research shows that Reconstitution Solution preserves the integrity of peptides such as BPC-157, TB-500, and CJC-1295 over multiple cycles of use

However, if you do only want to use one, then it depends what skin concerns you want ton target

Timelines vary

When B12 injections are needed We derive B12 from foods like eggs, meats, fish, dairy, nutritional yeast, and fortified foods, which means vegetarians are likely to need a supplemental form of this nutrient

10.1007/s00232-001-0103-4 9

How often should I get treatments