I've done both. I mixed slu injectable with a small amount of DMSO - there is a step by step guide I can share. But still my preference is oral. We had a good discussion on this here
Post in thread 'IRONCLAD - New Vendor Intro'
https://www.evolutionary.org/forums/threads/ironclad-new-vendor-intro.108927/post-2002862
Also
@HarleyGuy can share his thread in which we bounced around ideas on this.
There is a famous research lab in US that makes an oil version that is very well regarded but unavailable to us Aussies.
But yes if I had to pick one from it would be oral via enteric coated capsules. That for the moment has the most support behind theory. But again this is all bro science so something to be mindful of.
But for pure bioavailability and ensuring compound is doing what it's doing. I am a big fan of higher dose oral caps (eg my 40mg enteric caps).
Alternative. Buy the raw powder (I stock) and enteric coated caps that you can get from Amazon and make your own. I have quite a lot of 100-150mg caps in this form as I experimented
I am releasing a 100mg capped version in the same form of my other capsules range. That will be ready in 2 weeks. I know some people like
@fingers86 have had great results on that higher dose
Cheers