I noticed I'm seeing a lot of hysteria regarding symptoms with injections that are actually normal and should be expected to a degree. So I want to make a pinned announcement to hopefully prevent misinformation and redundant posts.
Starters, testosterone vials are sustained in thick oils. At room temperature, the viscosity can go all the way from 27-33 cP to 1000-1500 cP all depending on the carrier oil used. The impact this has on the pharmaceutical's pharmacokinetics can be incredibly significant, take castor oil for example. (Source 1) (Source 2) (Source 3)
With that said, if you are injecting thick oils right underneath the skin (subcutaneous injections) you should expect to see visible, itchy bumps that may last for days. These are called depots. This will not be as much of a common occurrence if you do intramuscular, since the oil will be deeper into the injected tissue. (Source 4)
If you experience redness, bleeding or soreness, please note this is also normal. When you are injecting, you can damage some blood vessels which will induce slight bruising (redness) and perhaps blood leaking through the injection site. (Source 5) (Source 6) (Source 7)
None of these sensations or events means you are allergic to the carrier oil. Which is incredibly rare since these oils are refined and lack the protein for our immune system to respond to anyways. Not only that, you probably already consume these oils on a casual basis within your diet especially in processed foods. (Source 8)
However, if you experience unusual discoloring like green or blue pigment you should be alarmed. This includes other characteristics such as unusually large bumps, leaking pus, long-lasting side effects or immense pain. Which you'd then need to see a doctor for medical consultation, because likely that is an infection.
Edit: if you have various discolored/light/tanned bumps bunched around eachother in a large area, go to the ER immediately.
