How approved somatropin products are kept stable as solutions, and why the research vial is a dry cake

Published 26 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
Approved liquid somatropin products hold the protein in a buffer, commonly histidine or phosphate, with a tonicity agent such as mannitol, a non-ionic surfactant such as poloxamer 188 to prevent aggregation at surfaces, and a preservative such as phenol or benzyl alcohol for multiple-entry cartridges. The combination is developed for each product and proven by stability studies. A lyophilised cake needs none of this to stay stable in storage, which is why research-grade material is supplied dry, with the water in a separate vial.

What a liquid formulation needs

A buffer to hold pH where deamidation and aggregation are slowest. A surfactant to coat air-liquid and container interfaces where the protein would otherwise unfold. Tonicity adjustment. A preservative if the container is entered more than once. Each excipient is chosen and its level set by experiment, and the result is tested over the full shelf life at the labelled temperature.

The pre-filled pen formats that dominated the market in the last two decades depend on this work.

Why lyophilise instead

Dry, the protein has no water to drive deamidation or hydrolysis and little mobility to aggregate. Shelf life is long without optimised excipients, which is what suits a research reagent made in modest quantity. The trade-off is that the solution, when made, has none of the protections a developed liquid product carries, and its stability is short.

This difference between a developed product and a research reagent is the whole content of this page.

The pack

A lyophilised 24 mg vial and a vial of bacteriostatic water. The batch documentation states what the cake contains. No formulation guidance is given, because none is part of the product.

Somatropin is supplied by REVIVE LAB UAE for laboratory research use only, with identity and purity documented for the batch. It is not for human or veterinary use, and no dosing, administration or protocol guidance is provided.

What it costs

FormatStrengthPriceAvailability
HGH Somatropin Pack24 mg (72 IU)AED 850In stock

Delivery is AED 40 flat and free on orders over AED 700. Payment is cash on delivery anywhere in the UAE, or USDT (TRC20) in advance, which takes 5% off the order total.

Frequently asked

What a liquid formulation needs?

A buffer to hold pH where deamidation and aggregation are slowest. A surfactant to coat air-liquid and container interfaces where the protein would otherwise unfold. Tonicity adjustment. A preservative if the container is entered more than once. Each excipient is chosen and its level set by experiment, and the result is tested over the full shelf life at the labelled temperature.

Does REVIVE LAB UAE provide dosing guidance?

No. REVIVE LAB UAE supplies research materials and provides no dosing, administration or protocol guidance of any kind. Every product is sold for laboratory research use only and is not for human or veterinary consumption.

How fast is delivery in the UAE?

Stock is held in Dubai. An order confirmed before 4 PM Dubai time is dispatched the same working day, reaching Dubai and Abu Dhabi the same day and the remaining emirates within 24 hours. Delivery is AED 40 flat and free over AED 700.

HGH Somatropin Pack — in stock, dispatched from Dubai
HPLC-verified, lot certificate on every carton, 24-hour delivery nationwide. Browse the catalogue → All peptides UAE

Related reading

Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.