Which type of drug is commonly used to relieve symptoms of colds and allergies?

Nasal decongestants are commonly used to relieve symptoms of colds and allergies because they work by constricting blood vessels in the nasal passages, which reduces swelling and congestion. This action helps open up the airways, making breathing easier for individuals experiencing nasal congestion due to colds or allergic reactions. Typical ingredients in these medications include pseudoephedrine and phenylephrine, which are effective in alleviating symptoms associated with nasal congestion.

In contrast, antibiotics are designed to treat bacterial infections and would not be effective for viral infections such as the common cold. Analgesics are primarily used for pain relief and may not specifically target the symptoms of colds or allergies. Beta-blockers, commonly used to manage cardiovascular conditions, do not address cold or allergy symptoms at all. Therefore, nasal decongestants are the most appropriate choice for managing such symptoms.