I purchased Equimec and the ONLY instructions are printed on the outside of the box, which states in full:

STORAGE: Protect from light. Store below 25C (air conditioning).

It doesn't mention any lower limit, so I think refrigeration is fine.

Thank you to everyone who warned and questioned me: it was worth checking.

I purchased Equimec and the ONLY instructions are printed on the outside of the box, which states in full:

STORAGE: Protect from light. Store below 25C (air conditioning).

It doesn't mention any lower limit, so I think refrigeration is fine.