Which should you choose? Here's what you need to know.
Glutathione and VIP are both immune / inflammation peptides, but they work differently. A tripeptide antioxidant naturally produced in cells. The body's master antioxidant, studied for immune support, detoxification, and skin brightening. Vasoactive Intestinal Peptide, a neuropeptide with potent anti-inflammatory and immunomodulatory effects. Studied for mast cell conditions and gut health. Compare vendor pricing and availability below.
On 20 Sep 2026 Peptide Compare tracked 48 vendors selling Glutathione, cheapest in stock $0.025 per mg at Step One, and 30 selling VIP, cheapest $3.90 per mg at Peptides Collective.
A tripeptide antioxidant naturally produced in cells. The body's master antioxidant, studied for immune support, detoxification, and skin brightening.
Vasoactive Intestinal Peptide, a neuropeptide with potent anti-inflammatory and immunomodulatory effects. Studied for mast cell conditions and gut health.
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options. Prices verified Sep 20, 2026.
Our top-rated vendor for each, based on trust scores, purity testing, and price.
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We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.