Question: Is the weight gain a result more water in your body, or a result of more fat in your body?
I recommend that you don't use potassium chloride, but use the herb dandelion instead.
You can purchase dried dandelion leaves, make an infusion (herbal tea) and drink. You can make enough in the morning to last the entire day, and keep it refrigerated. If you can't get dandelion leaves, you can use dandelion root.
Dandelion is beneficial to reduce the amount of water in the body, if you have too much.
Dandelion also promotes elimination of toxins through the bowel and kidneys.