In indonesia there is a fever-lowering medicine known as decolgen which also contains 12.5 mg phenylpropanolamine, is this safe to consume?

Better not: phenylpropnolamine has been discontinued in many countries in North America and elsewhere, but still in use in other countries. Was related to stroke in young women. If you need an OTC decongestant or a cold medicine, there are other alternatives, ask your pharmacist about, read the labels carefully, avoid any decongestant if hypertensive, best wishes