Frenadol is an over-the-counter medication commonly used to relieve symptoms associated with colds, flu, and Allergies, such as headache, fever, nasal congestion, and body aches. It typically contains a combination of active ingredients, including analgesics, antihistamines, and decongestants. The specific formulation may vary by country, so it's important to follow the instructions on the packaging. As with any medication, users should be aware of potential side effects and contraindications.