Does Acetaminophen have Penicillin? 

Does Acetaminophen have Penicillin? 

No, Acetaminophen does not contain Penicillin. These two are different medications which are intended for entirely different health conditions. 

Acetaminophen is an OTC painkiller and fever reducer, whereas Penicillin is a prescription antibiotic that is active against a number of bacterial species. Acetaminophen can’t do what Penicillin does, and vice versa. 

If you need Acetaminophen for your pain and fever, you can get this medication from your local pharmacy. However, if you think you need Penicillin, you should consult your healthcare provider. 

There are a huge number of bacterial infections that Penicillin can’t treat. This is why proper diagnosis is necessary to control the active bacterial infection in your body. 

Make sure you only take the antibiotic that your healthcare provider has prescribed. If Penicillin is the drug of choice for you, your doctor will write it down. Don’t ever take antibiotics without consulting your doctor first. 

Basic differences between Acetaminophen and Penicillin

Acetaminophen and Penicillin are entirely different from one another. Let’s talk about the basic differences to help you understand these drugs in a better way.

Mechanism of action

Acetaminophen works by reducing pain and fever through its action on the central nervous system (CNS). It blocks certain chemicals in the brain called prostaglandins, which are responsible for transmitting pain signals and regulating body temperature (1,2). 

By inhibiting the production of prostaglandins, acetaminophen helps to alleviate pain and lower fever.

Penicillin, on the other hand, is an antibiotic that works by disrupting the formation of bacterial cell walls. Bacteria have cell walls that provide structure and protection. Penicillin interferes with the synthesis of a component called peptidoglycan, which is crucial for building the cell wall (3).

By inhibiting this process, penicillin weakens and ultimately destroys the bacterial cell wall. As a result, bacteria are unable to maintain their shape and integrity, leading to their death. 

Clinical significant

Acetaminophen is primarily used to relieve pain and reduce fever. It can help alleviate various types of pain, such as headaches, toothaches, muscle aches, and pain associated with arthritis. Acetaminophen is also effective in reducing fever, which is a common symptom of many illnesses (1).

Penicillin, on the other hand, can be used to treat the following infections (4):

  • Strep throat
  • Skin infections
  • Ear infections
  • Some types of urinary tract infections
  • Respiratory tract infections

Common side effects

Common side effects of Acetaminophen may include (1):

  • Nausea
  • Upset stomach
  • Headache
  • Dizziness

In rare cases or cases of overdose, Acetaminophen can cause liver damage. 

Penicillin, on the other hand, can cause side effects including (3):

  • Nausea
  • Diarrhoea
  • Vomiting
  • Mouth sores 
  • Abdominal pain

Gastrointestinal side effects are quite common with antibiotics like Penicillin and Amoxicillin, which may be prevented when the antibiotic is taken with food. In some rare cases, Penicillin can trigger an allergic or hypersensitivity reaction. 

Final words

To sum up, Acetaminophen and Penicillin are two different medications used for different therapeutic reasons. The two medications can be safely used together, but they can’t replace one another.

Make sure you reach out to your healthcare provider if you think you have a bacterial infection. Penicillin may not be the best choice for you, as there are plenty of antibiotics with a broader spectrum of antibacterial activity compared to Penicillin.

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References

1.-

Gerriets V, Anderson J, Nappe TM. Acetaminophen. 2022 Sep 18. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan–. PMID: 29493991. https://www.ncbi.nlm.nih.gov/books/NBK482369

2.-

PubChem [Internet]. Bethesda (MD): National Library of Medicine (US), National Center for Biotechnology Information; 2004-. PubChem Compound Summary for CID 1983, Acetaminophen; [cited 2023 July 6]. Available from: https://pubchem.ncbi.nlm.nih.gov/compound/Acetaminophen

3.-

Yip DW, Gerriets V. Penicillin. 2022 May 19. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan–. PMID: 32119447. https://www.ncbi.nlm.nih.gov/books/NBK554560

4.-

Nathwani D, Wood MJ. Penicillins. A current review of their clinical pharmacology and therapeutic use. Drugs. 1993 Jun;45(6):866-894. doi: 10.2165/00003495-199345060-00002. PMID: 7691496. https://pubmed.ncbi.nlm.nih.gov/7691496/