Guaifenesin side effects

I am a 74 year old male. When I take 1a 600 mg Mucinex tablet. I have trouble urinating for about 24 hours and my bladder feels irritated

When my wife takes an OTC medication containing guaifenesin, she experiences sharp stomach pains that almost totally incapacitate her for a number of minutes. She also experiences dizziness and an intense desire to "either throw up or poop," in her words. We've known for a while that Mucinex has this effect on her. It wasn't until today, when she took some Robitussin CF and experienced the same side effects, that we looked up the name of the active ingredient. Now we know that she needs to avoid guaifenesin.

I was taking an over the counter guaifenesin-based cough syrup twice a day (150mg each dose) for approximately 10 days in an attempt to make my cough more productive. A nickel-sized pink patch appeared on the right side of my chin. I continued to take the guaifenesin thinking the reaction on my face was contact dermatitis from my phone. The pink patch turned dark red, then got very swollen (the whole lower side of my face swelled) and began to weep clear fluid. I immediately stopped taking the guai (I hadn't used my phone for days, clearly it was not the culprit). Surrounding the original red patch was a new pink patch which looked like it was going to take the same route, but because I stopped taking the guaifenesin the reaction was never as severe. The hives eventually scaled over and peeled.

It helps thin cervical mucus and can help aid in fertility!

Jittery, some mental confusion....

what are the side effects to guaifenesin?

Swelling for hands and feet

I m using guaifenesin for fibromyalga and have great improvement on irritble bowel and fatigue.

Jittery energy.