Experts say that much of the money spent on buying over-the-counter cough medicines is a waste adding that the active ingredients present in the so-called cough remedies may be ineffective. It is stated that in US alone people spend around $3.5 billion a year to these nonprescription cough medicines.
There are many nonprescription cough medicines, but most contain the same types of active ingredients in a limited number of strengths and combinations.
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Expectorants work by thinning mucus. Studies of their effectiveness vary, and the ACCP "cough committee" didn't endorse them.
Suppressants work by dampening the cough reflex. They provide short-term relief for chronic bronchitis symptoms, but aren't as effective on coughs caused by colds.
Decongestants work by constricting blood vessels, which shrinks swollen membranes and allows more air to pass through nasal passages. Decongestants can be effective in the short run, but they can cause side effects, and you can become dependent on decongestants in the form of nose drops.
Antihistamines help regardless of whether a cold or allergies is responsible for the cough.
So what should you take? The new guidelines advice leaving the cough and cold medicine section and buying an allergy medicine instead. Choose one that combines an older antihistamine (like brompheniramine, diphenhydramine, or chlorpheniramine) with a decongestant.
On the other hand, if you think a cold or cough medicine works, it probably won't hurt you to stick with it, even if what you're paying for is a placebo effect rather than a proven remedy, states the Harvard Health Letter.
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