Best Antibiotic For Strep Throat In Adults

To treat strep throat, the use of antibiotics is essential. There are many antibiotics used to cure strep throat, but what is best antibiotic for strep throat in adults? What is safe, cheap and effective antibiotic? This article will help you answer that question.


Strep throat is a throat infection caused by Streptococcus, which can make the throat feel painful. Compared with a sore throat caused by a virus, symptoms of strep throat are usually worse. If you do not have timely treatment for your strep throat, your strep throat can sometimes cause complications like kidney inflammation and rheumatic fever. Rheumatoid arthritis can lead to joint pain and inflammation, hives and even damage to the heart valve.

Strep throat affects people of all ages, but it is most common in people of 5 to 15 years old. If you or your child has signs or symptoms of a sore throat, see a doctor for prompt treatment.

Symptoms of strep throat

After streptococcus infection, it can take 2 to 5 days to find symptoms. Possible symptoms include:

  • A sore throat
  • Being difficult in swallowing
  • Redness and swelling, sometimes white spots or pus in tonsils
  • A small red spot on the soft or hard palate - the area at the back of the roof of the mouth
  • Swelling, pain in the lymph glands (nodes) in the neck
  • Fever
  • A headache
  • Rash
  • Abdominal pain and sometimes vomiting, especially in children
  • Tired

However, not everyone who has streptococcus infection gets a sore throat. In other words, you can carry the bacteria and can pass it to others without symptoms of the disease. Strep throat can occur any time of the year, but it tends to spread out in the late fall and spring.

What causes strep throat?

Bacteria called Streptococcus pyogenes, or A streptococci group are the main causes of strep throat. The strep throat is a highly contagious disease, and it can spread out mainly in the following forms:

  • Through respiratory system: Inhale water particles in the air when an infected person coughs or sneezes
  • Eat with strep throat patient
  • Exposure to objects such as door handles or other surfaces having pathogenic bacteria

Antibiotics for a strep throat

The use of antibiotics is very necessary for treatment of strep throat, so we should choose a type of antibiotics which is the best antibiotic for strep throat in adults and children.
The most common antibiotic is prescribed for strep throat is Penicillin or Amoxicillin.

  • Penicillin

The antibiotic used in the treatment of strep throat is penicillin G which is a beta-lactam antibiotic. It has two forms including a water-soluble powder for injection, tablets of 200.000 IU equal tablets of 125mg for oral use. Penicillin G kills bacteria by inhibiting synthesis of the bacterial cell membrane. However, this effect is reduced by penicillinase and other beta-lactamases. Penicillin G is not stable in acidic conditions, so it is difficult to absorb it by the oral route. Oral bioavailability is only about 15 - 30%. Therefore, penicillin G is mainly injected, and the best way is the intravenous injection. If you are allergic to penicillin, your doctor may prescribe other antibiotics such as A cephalosporin like cephalexin (KEFLEX), Erythromycin or Azithromycin (Zithromax)

  • Amoxicillin

This drug is in the same family as penicillin, as it is easy to use and is available in both tablet and solution, it should be considered the best antibiotic for strep throat in adults and children.

Amoxicillin is rapidly absorbed after applying and reaches the best effect during 1-2 hours after using. However, you need to take amoxicillin frequently in 24-72 hours, the symptoms of the infection decline. To achieve the best results, you must apply antibiotics as prescribed by your doctor, avoid alcoholic beverages, inform to doctor as soon as you have side-effects including rash, nausea, difficulty in the breath, etc.

  • Painkiller use

In addition to the antibiotic that is best antibiotic for strep throat in adults, your doctor may suggest some painkillers for a sore throat and fever, such as Ibuprofen (Advil, Motrin, others) or Acetaminophen (Tylenol, others). However, taking a large dosage can lead to liver problems. Therefore, you should read and follow the instructions on the label, talk to your doctor if you have any questions.

  • Lifestyle and remedies

In most cases, antibiotics will quickly kill the bacteria that cause the strep throat. In the meantime, you can try these tips to relieve the symptoms of sore throats:

  • Rest much: Sleep helps the body fight infection. If there is a sore throat, you should stay home if possible. 
  • Drink a lot of water: Keeping the moist throat helps reduce throat pain. Drinking plenty of water also helps prevent dehydration.
  • Eat soft foods: Food is suitable for a sore throat including soup, mashed apple, cooked cereal, mashed potatoes, sweet fruit, yogurt and soft-cooked eggs. Avoid eating spicy foods or acidic foods such as orange juice.
  • Gargle with warm salt water: Mix a quarter teaspoon (1.2 ml) of salt in 8 ounces (237 ml) of warm water. Use this mixture to rinse many times per day.
  • Stay away from stimulants. Cigarette smoking can make a sore throat worse and increase infection level like tonsillitis. 

Remedies to prevent a strep throat

Washing hand: Washing hand in a right way is the best way to avoid types of infections. You should apply a clean hand washing procedure as recommended by US Centers for Disease Control and Prevention (CD).

Cover your mouth when coughs or sneezes.
Do not share personal items such as bowls, dishes, spoon, cup,  if your family have sore throat patient.

Throat infection by streptococcus is about 20% of the causes of a sore throat, but it is a top cause leading severe systemic complications. The answer to the question of which is best antibiotic for strep throat in adults is amoxicillin. However, we need to go to the doctor for the best diagnosis and prescription.

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