This has been mentioned a couple times before and it works. My cardio is never affected on Tren when I use Singulair. It also inhibits Tren cough, but doesn't block any of the good effects of Tren.
By using it:
Reduce inflammation in the lungs
can reduce blood pressure
reduce hypoxia
reduce liver stress (low oxygen is bad for the liver). Though Singulair itself may affect the liver a bit, so not with orals.
Improve heart health by breathing better, (Tren sides are like having sleep apnea).
Singulair is an allergy med, take it it night. It blocks Leukotriene receptors in the lungs (like Nolvadex for the lungs), but doesn't block the prostaglandins we like from Tren use. Leukotrienes are a product of higher Prostaglandins (which are responsible for the fat burning properties of Tren). So we just block them in the lungs with Singulair.
Insurance usually covers it. So why not?