The capsule skin of many soft capsules is made of gelatin and other capsule materials, which will change with the change of temperature. When the outside temperature is high, it will be slowly heated and dissolved, resulting in the phenomenon of sticking together as you said.

But there is a degree of judgment. If they stick together, you cover the bottle tightly and shake it up and down, which means that the particles are separated and distinct, which is normal. If you shake it hard, it still forms a ball, indicating that the particles have deteriorated because the outside temperature is too high. Don't take it at this time.

I hope these are helpful to you. I wish you the best of health!