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Customer reviews for Mucinex 12 Hour Cold and Flu Medicine for Adults, 50 Tablets for
Mucinex 12 Hour Cold and Flu Medicine for Adults, 50 Tablets
4.8 out of 5 stars
stars
1,357 ratings1,357 reviews
  1. 5 stars82% (1,118)
  2. 4 stars15% (200)
  3. 3 stars3% (34)
  4. 2 stars0% (4)
  5. 1 star0% (1)

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Showing 1,111-1,120 of 1,357 reviews
Jun 12, 2026
Reviewer name: KristinS
5 out of 5 stars
5 out of 5 stars review

Easy to swallow

[This review was collected as part of a promotion.] I recevied this product for free from Influenster and Mucinex in exchange for my honest review. Mucinex works amazing for me when I am sick with a cold or flu. I like that this all in one pill offers naproxen instead of acetaminophen because sometimes acetaminophen isn't strong enough for my aches and pains. They are easy to swallow even though they look big. I like that this lasts 12 hours. I recommend Mucinex especially if you're really congested or coughing bad.

Review from influenster.com
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Jun 7, 2026
Reviewer name: YindraP
5 out of 5 stars
5 out of 5 stars review

Convenient 12 HR relief for cough, congestion,fever , and body aches in one product.

[This review was collected as part of a promotion.] I tried Mucinex 12HR cold& fever Multi- Simptomp during a cold , with cough,congestion , body aches and headaches .I like that it combines ingredients for cough , mucus and fever relief in one product , and the 12HR formula was convenient . I helped loosen mucus and made me feel more comfortable while recovering.The tablets are easy to take ,although the size maybe a little large for some people.Overall I would recommend it for multi symptom cold relief .Since these are tablets there isn't really a strong flavor, which I personally prefer over overly sweet cold medicine

Review from influenster.com
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May 29, 2026
Reviewer name: HaydenB
4 out of 5 stars
4 out of 5 stars review

Cold and flu must have

[This review was collected as part of a promotion.] Packaging is is easy to open and not excessive waste. Very easy to separate and pack. Instructions are very clean and I love that they are extended release. Texture is okay, on the larger size. Value is excellent.

Review from influenster.com
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May 28, 2026
Reviewer name: DianeivysF
5 out of 5 stars
5 out of 5 stars review

Fast and long- lasting relief for cold , congestion and fever symptoms

[This review was collected as part of a promotion.] This cold & fever medicine worked really well for relieving multiples symptoms at once . It helped with congestion, body aches , and fever while lasting for hours without needing to constantly re-dose . I also liked that it didn't make me feel too drowsy during the day . The tablets were easy to take , and I started feeling relief pretty quickly.

Review from influenster.com
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Jun 8, 2026
Reviewer name: IsabellaP
5 out of 5 stars
5 out of 5 stars review

A total lifesaver when you're dealing with all the symptoms at once!

[This review was collected as part of a promotion.] What I love about this most is the 12-hour relief. You can actually get through a full work day or a solid night's sleep without waking up congested or achy the second a standard dose wears off. It really knocked out my fever and loosened up my chest congestion quickly. The tablets are on the larger side (typical for Mucinex), but absolutely worth the extended relief. Definitely keeping this stocked in my medicine cabinet!

Review from influenster.com
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Jun 9, 2026
Reviewer name: GenesisM
5 out of 5 stars
5 out of 5 stars review

Long lasting relief for multiple cold symptoms in one product

[This review was collected as part of a promotion.] Mucinex 12hr cold & fever multi symptom helped relieve my cough, congestion, body aches and fever. I like that the relief lasted for hours, so I didn't need to take it often, the packaging is clear and the instructions are easy to follow. Overall, it's a convenient option when dealing with multiple cold symptoms.

Review from influenster.com
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Jun 6, 2026
Reviewer name: NicoleK
4 out of 5 stars
4 out of 5 stars review

Finally! Extended Release!

[This review was collected as part of a promotion.] I've been using Mucinex since the first showed up on the shelves. It always helps with the yearly chest cold I get around allergy season and this one came just in time. It relieved my headache,my cough and started breaking up the congestion day one. It didn't take long for relief to start being felt, about half a hour. That these last 12 hours using extended release technology is such a help, especially if you work outside the home. My only con is that these pills are fairly large, which might bother some that have issues taking pills and the dosage is two pills.

Review from influenster.com
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Jun 28, 2026
Reviewer name: AlexM
5 out of 5 stars
5 out of 5 stars review

Definitely works wonders

[This review was collected as part of a promotion.] My husband randomly got a cold for a couple days and gave him this medicine and it worked wonders for him. He took 2 tablets every 12 hours and felt better in about 2 days. This bi-layer tablet helped his cough, aches, and fever. It's made to provide 12 hours of relief for congestion, body aches, fever, and headaches. It's nice knowing you can take this 1 tablet and it will help you with multiple symptoms. It doesn't dissolve so you have to swallow it with a drink. He said it doesn't have a bad aftertaste either which also is a huge plus. Overall we are super pleased with this medicine and going to purchase it in the future.

Review from influenster.com
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Jul 9, 2026
Reviewer name: ReshanaR
4 out of 5 stars
4 out of 5 stars review

Great for the flu season

[This review was collected as part of a promotion.] Such a great brand of medicine for the flu. Great ingredients that works very fast to help give you a relief and lasted up to 12 hours which is fantastic. It's cover the counter drug so it's easy, accessible and affordable to get.

Review from Mucinex
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May 27, 2026
Reviewer name: MardelenaF
3 out of 5 stars
3 out of 5 stars review

Fast cold and fever relief

[This review was collected as part of a promotion.] I wish I had this 12 hr cold and fever multi-symptom medicine 1 week ago. I tried everything without relief and was so happy to see this product. I will take this medicine with me when I go on vacation. I love that there is no strong smell and they have ingredients that have inactive ingredients. I feel great to travel soon knowing I have medicine that will target many symptoms.

Review from influenster.com
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