Just the other day my husband said to me, "Boy, it's a good thing I don't have high blood pressure because otherwise I couldn't kiss you in the summer!" (Because I'm so salty - all year round, but especially when the temperature heats up!)
This doesn't help stop the salt, but last summer I started supplementing with unrefined sea salt and it made me feel a LOT better. This summer I'm taking about a tsp in water every day. I sweat out so much salt I get low on electrolytes FAST, so the unrefined salt helps a ton!