when to take antibiotics | Important Points

Antibiotics are a powerful weapon in the fight against bacterial infections, and they have saved countless lives since their discovery almost a century ago. However, these drugs can also have serious side effects and contribute to the development of antibiotic resistance, which is a growing global problem. Therefore, it is important to use antibiotics only when they are necessary and appropriate.

In this article, we will discuss when to take antibiotics, what bacterial infections they can treat, how to use them correctly, and what alternatives exist for non-bacterial infections or viral illnesses.

What are antibiotics?

Antibiotics are a type of antimicrobial medication that are designed to kill or inhibit the growth of bacteria. They work by interfering with specific functions or structures in the bacterial cell, such as the cell wall, DNA synthesis, or protein production. Some antibiotics are broad-spectrum, meaning they can target a wide range of bacteria, while others are narrow-spectrum and only work against specific groups of bacteria.

Antibiotics are commonly used to treat infections such as pneumonia, strep throat, urinary tract infections, and skin infections. They may also be prescribed before surgery or dental procedures to prevent bacterial infections. However, antibiotics are not effective against viruses, which cause the common cold, flu, and most cases of bronchitis and sinusitis.

When should you take antibiotics?

The decision to prescribe antibiotics should be based on several factors, including the type of infection, the severity and duration of symptoms, and the presence of risk factors for complications. Antibiotics are generally recommended for bacterial infections that:

– Are severe or potentially life-threatening, such as sepsis, meningitis, or endocarditis.
– Involve organs or tissues that are at risk of damage or dysfunction if left untreated, such as the heart valves, the brain, or the kidneys.
– Are caused by bacteria that can lead to more serious infections if not promptly treated, such as streptococcus, staphylococcus, or pneumococcus.
– Occur in people with weakened immune systems or other health conditions that increase their risk of complications, such as diabetes, HIV, or cancer.
– Are not likely to heal on their own or with other treatments, such as topical creams or pain relievers.

On the other hand, antibiotics are not recommended for viral infections, such as:

– Cold and flu.
– Bronchitis, unless the person has underlying lung disease or is at high risk of complications.
– Sinusitis, unless the person has severe symptoms lasting more than 10 days, or there are signs of bacterial infection such as fever, facial pain, or yellow-green nasal discharge.
– Sore throat, unless the person has a positive strep test or clinical features that suggest a bacterial cause, such as white patches on the tonsils, swollen lymph nodes, or fever.
– Ear infections, unless the person is younger than 6 months or has severe symptoms, or there are signs of bacterial infection such as pus draining from the ear or a perforated eardrum.
– Common skin infections such as impetigo or acne, which can often be treated with topical therapies or self-care measures.
– Digestive tract infections such as diarrhea or gastroenteritis, which are usually caused by viruses or parasites and often resolve on their own within a few days.

How to use antibiotics correctly

If your healthcare provider prescribes antibiotics for your bacterial infection, it is important to use them correctly to maximize their effectiveness and minimize their side effects. Here are some tips:

– Take the antibiotics exactly as prescribed, at the right dose and frequency, and for the full duration of the prescription, even if you start feeling better before the end of the treatment. This ensures that all the bacteria are eradicated and reduces the risk of recurrence or resistance.
– Do not share your antibiotics with others, even if they have similar symptoms, and do not take leftover antibiotics from previous illnesses unless advised by your healthcare provider.
– Do not take antibiotics for viral infections, such as cold and flu, as this can promote antibiotic resistance and increase the risk of side effects.
– Inform your healthcare provider of any other medications, supplements, or medical conditions you have, as some antibiotics can interact with other drugs or worsen certain conditions such as liver or kidney disease.
– Be aware of the common side effects of antibiotics, such as diarrhea, stomach upset, yeast infections, or allergic reactions, and report any new or severe symptoms to your healthcare provider.
– Follow good hygiene practices such as hand washing, covering your mouth and nose when coughing or sneezing, and avoiding close contact with sick people, to reduce the risk of infections and the need for antibiotics.

Alternatives to antibiotics

In some cases, bacterial infections can be treated with non-antibiotic therapies or preventive measures. Here are some examples:

– Vaccines: Some bacterial infections can be prevented with vaccines that stimulate the body’s immune system to produce specific antibodies against the bacteria. Examples include tetanus, diphtheria, pertussis, pneumococcus, meningococcus, and Haemophilus influenzae type B.
– Probiotics: Some studies suggest that certain strains of “friendly” bacteria can help restore the balance of gut flora and reduce the risk of antibiotic-associated diarrhea or other infections. However, more research is needed to confirm their effectiveness.
– Topical therapies: Some skin infections, such as impetigo or acne, can be treated with topical antibiotics or antiseptics, which are applied directly to the affected area. These have fewer side effects and are less likely to promote antibiotic resistance than systemic antibiotics.
– Surgery: Some infections, such as abscesses or infected implants, may require surgical drainage or removal to eliminate the source of the bacteria and prevent further spread or complications.
– Watchful waiting: In some cases of mild or self-limiting infections, such as sinusitis or bronchitis, healthcare providers may recommend watchful waiting, which means waiting for a few days to see if symptoms improve on their own before considering antibiotics. This can reduce unnecessary antibiotic use and lower the risk of side effects.


Antibiotics are a valuable tool in the treatment of bacterial infections, but they should be used judiciously and only when necessary. Healthcare providers and patients play a crucial role in preventing the emergence and spread of antibiotic resistance by choosing the right antibiotics, using them correctly, and exploring non-antibiotic alternatives whenever possible. By working together, we can preserve the effectiveness of antibiotics for future generations and ensure that we have effective therapies for the most serious bacterial infections.

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