How is this taken? Sucked out of the pouch, put in warm water?

Typically take right from pouch when traveling. Sometimes put in hot tea.

Can this help with improving your throat? I have a very raspy voice and I want to change it a bit. Will this help.

Nothing you ingest will actually touch your vocal folds (when you swallow, it goes down your esophagus, not your trachea, otherwise you'd choke). This feels soothing, though! I've used it in the past to help prevent illness, rather than to treat it. For treating intermittent raspy voice, try gentle steam inhalation (but be careful, because steam can burn if you're too close...) I use a humidifier for that. Voice professional moment: if you're experiencing a change in voice that lasts longer than a couple weeks, and/or isn't directly due to illness, you should try to make an appointment with an ENT/laryngologist. Raspy voice can indicate some significant health issues that won't resolve on their own (reflux, cancer, other throat-related illness). The doctor may be able to help you figure out why your voice is raspy, and get you on a path to treating it!