Final answer:
Antihistamines are over-the-counter medications that effectively treat allergies by blocking the effects of histamines. They can relieve symptoms such as nasal congestion and hives caused by allergens. Antileukotrienes and antiprostaglandins can also be used alongside antihistamines to further control the immune response.
Step-by-step explanation:
Antihistamines are over-the-counter medications that can effectively treat allergies. They work by blocking the effects of histamines in the body, which are responsible for causing allergy symptoms. Antihistamines can help relieve symptoms such as nasal congestion, sneezing, and hives caused by allergens like pollen, dust mites, or animal dander.
Another type of over-the-counter medication that can be used in combination with antihistamines is antileukotrienes and antiprostaglandins. These drugs help reduce inflammation and further control the immune system's response to allergens.
It is important to consult with a medical professional, especially if you plan to use antihistamines for a longer-term or if you have severe allergies that require emergency medical care.