Yeah, I was on Vitamin D specifically, before it hit me. I was really healthy, had just passed a sparkling comprehensive blood test and was eating super healthy, exercising a lot (like kayaking literally every other day and doing weekly 5 mile backpacking hikes, training for a week long mountain hiking trip). Then, like being hit by a train the day I got my first Moderna shot, and it was down hill from there. Around 1.5 years later, I still huff and puff and struggle physically to shower in the morning.