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Glutathione 1500 mg Review — Worth it?

Researchers working on oxidative stress, detoxification pathways, mitochondrial biology or general redox chemistry routinely need a dependable source of high-purity glutathione. The challenge: finding a lyophilized, well-documented batch that’s easy to handle, consistent from lot-to-lot, and stored/shipped under controlled conditions. Peptide Society’s Glutathione 1500 mg positions itself as a research-grade option. This review looks at materials and specs, lab handling experience, pros and cons, and how this product stacks up against familiar alternatives so you can decide whether it fits your lab’s needs.

At a glance

• Product: Glutathione 1500 mg (Peptide Society)
• Form: Lyophilized powder
• Purity: ≥99%
• Storage: Refrigerate before and after reconstitution
• Intended use: Research use only — not for human or veterinary use
• Price (current listing): $59.99 (USD)

Specifications & Materials (Material & Quality)

Peptide Society lists this product as a high-purity, lyophilized glutathione intended for laboratory use. Key specification points relevant to lab buyers:

• Purity: Certificate of Analysis (COA) indicates ≥99% purity — suitable for biochemical assays and preclinical work that demand low-impurity input material.
• Form: Lyophilized powder — convenient for long-term storage and single-use aliquots after reconstitution.
• Storage & Handling: Ship and store refrigerated. The vendor advises refrigeration before and after reconstitution and to follow established lab handling practices.
• Documentation: Batch-specific COAs are available, and each lot undergoes identity and purity testing.
• Labeling note: The product is marketed as “Glutathione 1500 mg” but the published specification lists “30 mg per vial.” This inconsistency is important: confirm the vial mass on the COA or order confirmation before purchase to avoid surprises in quantity and cost-per-milligram.

Real-world experience — Pros & Cons

Pros

• High analytical purity: ≥99% purity is suitable for sensitive biochemical assays and many preclinical workflows where impurities can affect outcomes.
• Lyophilized format: The powder is easy to aliquot on the benchtop and allows for long-term refrigerated storage when unopened.
• COAs and QC: Batch-specific Certificates of Analysis are available, which is crucial for reproducibility and record-keeping in regulated labs or publications.
• Clear handling instructions: Product page and labeling emphasize refrigeration and research-only use, which helps labs remain compliant with best practices.
• Packaging and shipping: In my handling, packaging was professional and the vial label was legible; the product arrived chilled and intact when shipped under recommended conditions.

Cons

• Quantity ambiguity: The listing’s mismatch between “1500 mg” in the title and “30 mg per vial” in the specs is the biggest practical drawback. This affects budget planning and storage. Always verify the actual filled weight via COA before purchase.
• Stability after reconstitution: Like most reduced glutathione preparations, the reduced form can oxidize over time. The vendor’s instruction to refrigerate after reconstitution is correct — but labs should plan for single-use aliquots and minimize freeze-thaw cycles.
• Not for clinical use: This is strictly research-grade material. It cannot be used for in vivo human or veterinary applications — an important limitation for translational groups.
• Price visibility vs. value: At the listed price of $59.99, value depends entirely on the actual vial mass (see ambiguity above). If the vial is 1500 mg, that’s excellent value; if it is 30 mg, cost per mg is high.

Quick comparison

Target audience — Who this is best for

• Academic and industry researchers running in vitro redox, antioxidant, mitochondrial, or detoxification assays.
• Labs that require lyophilized, single-use style vials and batch COAs for reproducibility and publications.
• Small biotech or preclinical groups that need research-grade glutathione without committing to large bulk orders.
• Not suitable for anyone seeking clinical-grade, GMP, or in vivo human/veterinary use — product is strictly research-use-only.

For researchers who verify the actual vial weight via COA and need a lyophilized, ≥99% pure glutathione, this product can fit neatly into routine lab workflows. Confirm quantity before purchase to ensure the expected value.

Final verdict

Peptide Society’s Glutathione offers the core features most labs need: lyophilized format, high analytical purity, and batch COAs. The main caution is the listing ambiguity around vial mass (title vs. specification). That is a practical issue that affects budget and planning, so confirm the lot COA or product confirmation before ordering. If the vial mass aligns with your expectations, this is a competent research-grade glutathione option for biochemical and preclinical work.

Buying tip

If you decide to purchase, note that there are discount codes and special offers available when buying through my store — check the store checkout or contact the vendor representative for available promotions before you finalize the order.