TB-500 is not a scheduled substance under Philippine law. It is also not registered as a pharmaceutical, which puts it in the same grey research-use lane every other compound on this site occupies. Personal-quantity parcels generally move without incident, but unregistered injectables can be detained at NAIA inspection, and a detention is a waiting game your cold packs will lose. The wider position is set out in the PH legality filing.
One point specific to TB-500 volume buyers. Because the loading protocol consumes vials quickly, people are tempted into large single parcels. Bulk parcels draw scrutiny and risk being held long enough for a cold-chain breach during clearance, which in this climate is a real problem rather than a theoretical one. Smaller, more frequent orders are the safer shape here even though they cost more in shipping.
Domestic movement is straightforward. Metro Manila is same-day by motorcycle courier when a supplier holds local stock. Nationwide insulated courier is 1 to 3 days with cold packs. Research-peptide retail is effectively zero outside Metro Manila, so provincial buyers in Davao, Cebu, Iloilo and Baguio order online exactly as capital-region buyers do.