Caffeine, Diphenhydramine, Paracetamol, Phenylephrine

Caffeine, Diphenhydramine, Paracetamol, and Phenylephrine are individual substances commonly found in combination medications to treat various symptoms.
Caffeine is a central nervous system stimulant that helps to increase alertness and reduce fatigue. It is often used in combination with other medications to enhance their effectiveness.
Diphenhydramine is an antihistamine that helps to relieve allergy symptoms such as sneezing, itching, and runny nose. It also has sedative properties, making it useful for treating insomnia and promoting sleep.
Paracetamol, also known as acetaminophen, is a widely used pain reliever and fever reducer. It is effective in treating mild to moderate pain, such as headaches, toothaches, and muscle aches, as well as reducing fever associated with colds and flu.
Phenylephrine is a decongestant that helps to reduce nasal congestion and swelling by constricting blood vessels in the nasal passages. This medication is commonly used to relieve symptoms of colds, sinus infections, and allergies.
Combination medications containing these substances are often used to treat a variety of symptoms simultaneously, such as cold and allergy relief, or pain and fever reduction. Always follow the dosage instructions provided by a healthcare professional and consult with them if you have any concerns or questions about using these medications.