Storing peptides in the Philippine heat and while travelling

The house standard, in short

The Primara Labs storage standard is set out in full in the storage guide; this is the version to keep in your head.

• Sealed vials go in the fridge at 2 to 8 °C, in their box or a closed container, away from light. The back of a shelf is steadier than the door, which warms up every time it opens.
• A mixed vial is a solution, and it stays in the fridge. Write the date and the concentration on it. How long it stays usable depends on the compound, so follow the lab report or product label rather than a rule of thumb.
• The freezer is not the default. Whether a peptide tolerates freezing depends on the compound and its formulation, so follow the lab report or product label. Repeated freezing and thawing is the pattern to avoid.

The Philippine climate is the reason this matters more here than in a temperate country. A room without air conditioning sits well above the fridge range for most of the year, and a car parked in the sun is far hotter. Heat is the thing a vial is most likely to meet here, so the habit to build is simple: out of the fridge only when it has to be, and back in straight away.

Hotel minibars

A hotel minibar is designed to keep drinks cool, not to hold a steady fridge temperature. Many run warmer than a kitchen fridge, some cycle on and off, and in rooms with a key-card power slot the minibar can switch off whenever you take the card out and leave.

1. Buy a small fridge thermometer. Hardware and department stores sell them, and they cost far less than a spoiled vial.
2. Put it in the minibar for a few hours, on the shelf where the vials would sit, and read it.
3. If it reads inside 2 to 8 °C, use it, and keep the vials in their box in the middle of the shelf. In a small fridge the spot right against the cooling plate can drop below freezing.
4. If it reads warmer, ask the front desk for a proper fridge in the room. Serviced apartments and longer-stay rooms often have a kitchen fridge already, which is the better choice.

Check it again after the first night, and whenever you come back after a day out.

Brownouts

Power cuts still happen in parts of the country, and in some provinces they are scheduled. A closed fridge holds its temperature for a good while, so the most useful thing to do during an outage is nothing: keep the door shut and do not open it to check.

• For a long outage, move the vials into an insulated pouch with frozen ice packs, wrapped so that no vial touches an ice pack directly.
• When the power returns, give the fridge an hour or two to come back down before you read the thermometer, then move the vials back in.
• If a mixed vial sat warm for hours, note how long the power was off and message us on WhatsApp before you do anything else with it. Sealed powder is the more forgiving form; a solution is not.

Keep a couple of ice packs frozen at all times, and if you live in a condo, ask building admin whether the backup generator covers the units or only the lifts and corridors.

Keeping mixed vials cold in transit

Moving a mixed vial, from a hotel to a condo or across town, is where most heat damage happens. For anything longer than a short ride in an air-conditioned car, carry it the way it was delivered: cold.

• Use a small insulated pouch with a gel pack frozen overnight.
• Wrap the vial in a cloth or keep it in its box so it does not freeze against the pack.
• Keep it upright and out of the sun, and never leave it in a parked car, even for a few minutes.
• Put it back in the fridge as soon as you arrive, before you unpack anything else.

Domestic trips: Cebu, Siargao, Palawan, Boracay and Bohol

Island trips add a flight, a van and often a boat, usually in full sun. For the trip:

• An insulated pouch or small cooler bag, with two or three gel packs frozen overnight.
• A fridge thermometer, so you can check the fridge at the other end.
• Vials in their box, wrapped so none touches a gel pack.
• Hand luggage rather than checked bags, so the pouch stays with you. Airlines and airport screening set their own rules on gel packs and liquids in the cabin, and they change, so check your airline's current rules before you pack.

Before you book, ask the property whether the room has a fridge and whether it has power all day. Smaller islands and remote resorts can run on a generator schedule. On the way, keep the pouch in the shade on boat transfers and inside the van rather than on the roof rack.

For a longer stay, it can be simpler to have an order delivered to where you are going than to carry one. Cebu (1 to 2 business days), Siargao (3 to 5 business days), Boracay (2 to 3 business days), Bohol (2 to 3 business days) and Palawan (2 to 4 business days) are on the courier list, each with its own page and delivery window.

Leaving the Philippines

We ship within the Philippines only and cannot advise on taking products into another country. Check the rules of your destination before you travel.

Further reading

• Storing peptides: sealed, mixed and on delivery, the house storage standard with its sources, and what to do when a cold-chain parcel arrives.
• Storing peptides in Philippine heat, on why tropical temperatures change the handling rules.
• Delivery to hotels and condos, on getting the parcel from the front desk into a fridge quickly.