What researchers say — on the record

Ran a 20-day cycle across three subjects. HPLC on the vial matched the published COA to two decimals. Cold-chain arrived cold, not lukewarm — that alone puts Regena ahead of the last three suppliers I tried.

We needed batch documentation strong enough to reference in an internal write-up. The COA PDF, retention time and MS confirmation were all there without asking. Shipping to a UK lab address cleared in four days.

Ordered comparison batches from three suppliers. Regena was the only one whose vial mass matched the label within tolerance. Support answered a technical query on WhatsApp inside 20 minutes.

US shipping took eight working days, tracked the whole way. Reconstitution behaved exactly as the COA suggested. First supplier I've felt confident enough to recommend inside my group.

Needed a supplier that would actually answer questions about lyophilisation and stability. Got a proper answer, not a copy-pasted disclaimer. Ordered twice since.

The colour, mass and reconstitution profile were textbook. Batch code tracked cleanly to a Janoshik report. I'll be putting Regena on our preferred-supplier shortlist.