I have been using tren for many many years. Ive done short 3-4 week blast cycles and Ive done very long 8-9 month cycles with tren and always from time to time I get the infamous tren cough, I have gotten it so bad that I almost pass out.... I hate it!, ive searched and searched on why we get it but no one really knows why, IMO its cause when injecting it you hit a blood vessel or nick a vein and it travels through the blood stream and into the lungs, this happens to me with other compounds as well not just tren, at times when I use my home brew I can taste the carrying oil that I use and I can feel it in my lungs so I know this is a normal thing that happens when injecting gear or any kind of injectable. To beat the tren cough you need to push the oil in as slow as possible I mean pushing in 2-3 ticks on the syringe at a time and waiting about 10 seconds before pushing another 2-3 ticks, if you taste or feel a cough coming then wait several more seconds before continuing, you can even readjust the angle of the pin before starting again, remember the slower the better, by doing this I will guarantee that you will not get the tren cough again