re: Any outside the box treatments for Tennis elbow?

Had it bad. Nothing helped. Smoked one joint, and it never hurt again.

Injecting in the elbow region can be painful, even with the 31g syringe used for peptides

BP 157 and foreman exercises are all that worked for me after moving furniture for 2 days… lasted 45 days til I tried these remedies

pull ups and dirty rice workouts

I had an elbow problem from doing some blacksmithing work. (uncoiling large springs)
I was given a strap and my wife ordered another for me. A doctor gave me Diclofenac sodium topical gel which is some nasty stuff, but helped.
I kept using, but not abusing the elbow. Mostly stretching and light use.
Good luck, I remember that pain.

I got Tennis Elbow years ago moving a large piece of tempered glass up a stairwell to the third floor of a new office building because it wouldn't fit in the elevator. I believe it took five of us to do it. Sucker was heavy.
Got tired of the constant nagging pain and the absolutely excruciating pain when I would go to shake someone's hand.
A cortisone shot from a needle the size of a knitting needle did the trick. That was thirty years ago.

Last year developed a pain and burning rash in the other elbow and it turned out to be Bursitis. A few days of an anti-inflammatory took care of it.

Tenotomy. Tennis elbow is a chronic/degenerative process in most people as opposed to a true tendinitis. The body just never mounts a good healing response. Tenotomy under ultrasound guidance induces a new injury to stimulate bleeding and a more robust healing response from the body, like a poor man’s PRP. Give it a try if nothing else has worked.

Tylenol for two weeks as suggested by doctor.

Take it even if not hurting.

I can't straighten out my right arm due to weed eater elbow. A few Dr's have said there's nothing they can do.

Mine has been going on for a while. Tried PT, injection(thought I was cured) and exercises. Nothing has yet worked. I just started BPC-157 this morning.