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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 1,011-1,020 of 1,357 reviews
May 29, 2026
Reviewer name: JessicaF
5 out of 5 stars
5 out of 5 stars review

"Marvelous Mucinex!"

[This review was collected as part of a promotion.] This "Mucinex 12-Hour Cold & Fever Multi-Symptom" Medicine is always fantastic to have on hand! Not only is there the perfect number of extended release tablets in this box, but they are 100% effective. When my family and I are feeling under the weather, it's always good to know that Mucinex is here to help us power through and feel our best, so I would recommend these. Thank you to Influenster and Mucinex!

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

Long lasting!

[This review was collected as part of a promotion.] These worked great when I was feeling under the weather recently. I've always been a very big fan of mucinex effectiveness when I am ill but this one is seemed to work longer and did not make me feel groggy. Pills were a bit chalky but that's really my only complaint

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

My go to

[This review was collected as part of a promotion.] Mucinex has always been my go to, sick with a cold, medicine! I am an ER nurse and are around different cold viruses constantly. I need something that will knock it out asap so I can continue to work. I make sure I stay hydrated with it so I dont experience the dry mouth side effects. It seemed to keep my symptoms at bay and decrease the whole length of the cold thankfully!

Review from influenster.com
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Jun 22, 2026
Reviewer name: AntoinetteB
5 out of 5 stars
5 out of 5 stars review

Highly recommended

[This review was collected as part of a promotion.] Mucinex 12 HR Cold & Fever Multi-Symptom worked great for me! It helped relieve multiple symptoms at the same time including congestion, body-aches, headaches, and fever without having to take different medications. Relief lasted a few hours which allowed me to rest and make it through the day. It was easy to take and provided a significant improvement in a short amount of time. It's my go-to medication to keep on hand. I recommend it to anyone looking for effective, long-lasting relief.

Review from influenster.com
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Jul 6, 2026
Reviewer name: MelissaM
5 out of 5 stars
5 out of 5 stars review

Mucinex 12-Hour Cold & Fever provided effective, long-lasting relief from my cough, chest congestion, body aches, and fever, making it easier to get through the day.

[This review was collected as part of a promotion.] Mucinex 12-Hour Cold & Fever provided effective, long-lasting relief from several of my cold symptoms. After taking it as directed, I noticed a reduction in chest congestion, body aches, and fever, making it easier to rest and go about my day. The extended relief was especially convenient since I didn't need to take medication as frequently as with some other cold remedies. The tablets are larger than average, but they were easy to swallow with water. Overall, I found this product to be reliable, effective, and convenient for treating multiple cold symptoms in one medication. Based on my experience, I would recommend it to anyone looking for long-lasting relief from cough, chest congestion, fever, and body aches.

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

Holy grail product when sick! All in one

[This review was collected as part of a promotion.] Holy grail product when sick! I am so glad this product came out, it's an all in one! The packaging is very sleek and easy to get the medicine out, which is amazing when sick. Instructions are very clear, and it works!!! It's a slow release pill which keeps you feeling better for longer!

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

Immediate Relief

[This review was collected as part of a promotion.] I caught whatever bug is going around and took these on day 2 of my symptoms. I felt so much better! These pills are not big and don't have a chalky aftertaste. It started working immediately and lasted all day. I made it through my work shift and honestly forgot I was sick!

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

This is a great option to help tackle your cold symptoms and help you recover and feel like yourself again

[This review was collected as part of a promotion.] If you're looking for a product that will tackle multiple cold symptoms and flu symptoms this is definitely worth keeping in your medicine cabinet. Helps with congestion headaches and body aches. Also great for daytime or nighttime symptom control.

Review from influenster.com
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Jun 16, 2026
Reviewer name: NoelleG
5 out of 5 stars
5 out of 5 stars review

Convenient 12-hour, multi-symptom cold and fever relief that helps manage cough, congestion, fever, headaches, and body aches in one product.

[This review was collected as part of a promotion.] I was impressed with the packaging and clear labeling on Mucinex 12HR Cold & Fever Multi-Symptom. The extended-release formula combines naproxen sodium (110 mg) for fever, headache, and body aches, dextromethorphan HBr (30 mg) to help suppress coughs, and guaifenesin (600 mg) to loosen and thin mucus. I liked that it provides up to 12 hours of relief, making it convenient during the day or overnight. It helped target multiple symptoms in one product, reducing the need for several medications. The value is good for a multi-symptom treatment, though users should be aware of potential side effects such as stomach upset, dizziness, or drowsiness depending on individual sensitivity. Overall, it's a convenient option for managing cold and flu symptoms.

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

Feeling better after the FIRST dose

[This review was collected as part of a promotion.] This could not have came at a better time! I am a nurse and currently dealing with a cold and this medicine made me feel so much better even after the first dose. It didn't make me groggy, or feel like I had no energy which I love. Highly recommend and this will be a regular purchase for me.

Review from influenster.com
Helpful?1RQMQLXT1NBQ6004981466