A really, really great game , I love it ! It looks and sounds amazing.
That said, I think it has one major flaw: once you run out of medicine, it's game over.
I played the game twice. The first time, I got stuck in the room with a door and a button you're supposed to stand on. I was stuck there for about 5 minutes, then restarted from the beginning and realized there was a hidden room with a box inside it.
The second time, I played for almost 13 minutes. I ended up spending all my medicine in the room with the floating platforms (the one in the screenshots, I think). After reaching the door, I realized it was closed because there was a box on the other side that I hadn't seen. And since I couldn't remember the exact positions of the real platforms, I eventually quit. I was honestly really sad I couldn't finish it , I was enjoying it that much.
Overall, the parkour sections were solid and the puzzles are good .
Also, I'm genuinely surprised this is your first game jam. Great work!