the reason Tren causing heart burn is that in a lot of people there is a histamine effect and your body is trying to respond to the 'toxicity' load by detoxifying itself via increase of stomach acid. some people detoxify with sweat, through their skin (get acne), though their breath, kidneys, etc.. and with some people your body over produces stomach acid.
some guys can solve this with histamine blockers and PPI (proton pump inhibitors that lower stomach acid production). . maybe why you ever wondered why guys take Benadryl in contest prep and on high dosages of Tren (helps with both sleep and blocking histamine response) .
Deadlifting Dog is correct .. Tren is not something ideal for hard gainers. it can be used for adding size but has to be used with precision.. you have to couple it with higher amounts of estrogen and "bloat" and the ability to take in lots of food. if you have a fast metabolism and you have problems getting down lots of food or your estrogen sensitive , then Tren isn't going to work for you for putting on size.
speaking of "bloat" .. thats not a negative side effect brother . thats part of the growing process.
see my post here on Osmotic super compensation .
https://forums.steroid.com/anabolic-...pensation.html
if you want to add size you have to run the "wet" compounds and let the process take its place and then get your body to reach a new set point and acclimate to what you put on..
part of that has to do with getting that water weight on you. letting it set in. then acclimating to it and letting the anabolic processes do their job (which takes months).. you have to get "bloated" , push some heavy ass weight, eat tons of red meat and clean carbs, and just stick with that for awhile.
playing with things like methyltren etc. is not the answer.