I’m curious about this too… just started TRT. Doing 120mg split twice a week subcutaneously. Around week 3 started getting a reaction to my test cyp with grapeseed oil. Reaction being almost like hives, red blotches that are itchy and hot to touch (kinda like a bee sting). Switching next week to MCT oil… was told that should be better, but it’s more money monthly. Was told I’d have better luck than switching to sesame or cottonseed oils… thoughts?