I bought A HP potion box with 100 small life potion, 100 medium life potion and 100 mysterious water.
The small life and medium lift potion work fine. but mysterious water doesn't restore any hp at all as said "Restores an amount of HP equal of 4% of your Max HP every 3 seconds for a 10 minute duration." I have already used 150 of them without paying attention.
Need GM to look into it.