How to keep Nuun from squirting out of my hydration bottle?

[fluffycookie]

In my disaster of an attempt at a long run yesterday I ran into issues with my Nuun squirting out of my bottle that was on my hydration belt.  I used the nuun last week and didn't have this issue.  I did make it yesterday and put it in the bottle and then stuck it in the fridge for about 30 minutes while I was outside with DS who was riding his bike.  It literally was squirting out of the bottle soaking me.  I opened the cap to vent it, took the cap off and then drank some, but it continued to happen.  My doctor (who is a marathoner herself) wants me to sip Nuun on my long runs because my high blood pressure medicine contains a diuretic and I had noticed that on my long runs my hands were swelling really bad.  I tried it for the first time last weekend and even though I probably took only about 2-3 ounces of the 6 ounce bottle my hands weren't swollen.

TIA!

[venice2007]

Omg I effing hate that. I've no idea how to fix it. Even when I drop the nuun in the night before, leave the cap off til morning, it still happens. I've changed caps, put less water in, let it sit a while etc and it still happens. I'm always soaked for the first mile then it seems to stop.
Hope someone here has the answer lol

[Mushe]

So annoying! I've had luck with filling a bottle halfway, dropping Nuun in, and then filling it the rest of the way later.

[ebeth]

I let it sit with the cap off while the tab dissolves. Then I vent it several times in the first mile and make sure I have my mouth on the mouth of the bottle when I drink. It usually settles after a bit.