Afrin is a last resort for me, I have terrible sinus congestion when I lay down to a cold. I couldn't sleep at all. So if I planned to use it only once, and never unless really necessary, can it be safe? I alread bought it, and I can't return it, and I didn't read about the dangers until AFTER i bought it. So anyways, if I planned on only using it once, is it safe?
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