Can Benadryl be used for a toothache? 

In this concise article, we will discuss the effectiveness of Benadryl for toothache, explore the medications commonly used to treat toothache, highlight the clinical conditions for which Benadryl is prescribed, and touch upon the potential adverse effects of this medication.

Benadryl is not commonly used for toothache. Studies have shown that this medication can be used as a local injectable anesthetic, but in extremely rare situations (1,2).

Dental pain is typically managed with acetaminophen, nonsteroidal anti-inflammatory drugs (NSAIDs), and topic anesthetic gels. In some cases, antibiotics may be necessary to address the underlying cause (3,4,5).

So, if you have a toothache, reach out to your dentist to get a proper diagnosis and treatment. It’s not appropriate to start taking medications on your own.

Benadryl is predominantly used for allergic reactions, but its use has also been employed for other clinical conditions.

It is important to know that Benadryl may cause important adverse effects (6). If you experience any unusual or concerning issues while taking this medication, it is advisable to contact your doctor/dentist.

Can Benadryl be used for a toothache? 

Benadryl (diphenhydramine) is an antihistamine medication (antiallergic) that is not commonly used for toothache.

Literature studies indicate that injectable diphenhydramine can be used as a local anesthetic in very rare cases where lidocaine or other local anesthetics are contraindicated (such as in cases of allergy to local anesthetics). 

However, researchers caution that the dose of diphenhydramine required to achieve this anesthetic effect can be dangerous (1,2).

If you have a toothache, reach out to your dentist. It’s not appropriate to start taking medications on your own.

How to use Benadryl for a toothache? 

If it is necessary to use Benadryl as a local anesthetic for your toothache, only your dentist will be able to determine and administer the correct dosage to achieve such an effect, which will vary according to the individual characteristics of each person (2).

What medications work for a toothache? 

Toothache is usually managed by acetaminophen, NSAIDs, such as Ibuprofen and Naproxen) and, in some cases, short-acting opioid medications are used.

Gels containing Benzocaine or Lidocaine can also provide temporary relief from dental pain. However, it is important to know that although these medications can be used in the management of dental pain, they can’t treat the root cause of it (3,4,5). 

Some toothaches are caused by bacterial infections and they don’t get better without using a suitable antibiotic.

In this context, Amoxicillin is commonly used as an antibiotic for treating tooth infections. Additionally, Doxycycline, Clindamycin, and other antibiotics are frequently employed (5).

This is why you should head out to your dentist and get a proper diagnosis and treatment. . 

What clinical conditions is Benadryl prescribed for?

Some of the clinical indications for the use of Benadryl include (6):

  • Relief of red, irritated, itchy, and watery eyes; sneezing; and runny nose caused by hay fever, allergies, or the common cold.
  • Relief of cough caused by minor throat or airway irritation.
  • Prevention and treatment of motion sickness.
  • Treatment of insomnia (difficulty falling asleep or staying asleep).
  • Control of abnormal movements in people with early-stage Parkinsonian syndrome or as a side effect of medication.

This medication may be prescribed for other purposes as well. It is recommended to consult your doctor or pharmacist for more information.

What are the possible adverse effects of Benadryl?

Benadryl may be associated with the following adverse effects (6):

  • Dry mouth, nose, and throat
  • Drowsiness
  • Dizziness
  • Nausea
  • Vomiting
  • Loss of appetite
  • Constipation
  • Increased chest congestion
  • Headache
  • Muscle weakness
  • Excitement (especially in children)
  • Nervousness

Some side effects can be serious, such as:

  • vision problems
  • difficulty urinating or painful urination

Benadryl may cause other side effects. Talk to your doctor if you experience any unusual or persistent problems while taking this medication.

Conclusion

In this concise article, we have discussed the effectiveness of Benadryl for toothache, explored the medications commonly used to treat toothache, highlight the clinical conditions for which Benadryl is prescribed, and touched upon the potential adverse effects of this medication.

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References

1.-

Green SM. What is the role of diphenhydramine in local anesthesia? Acad Emerg Med. 1996;3(3):198-200.

2.-

Pavlidakey PG, Brodell EE, Helms SE. Diphenhydramine as an alternative local anesthetic agent. J Clin Aesthet Dermatol. 2009;2(10):37-40.

3.-

Myers AL, Jeske AH. Provider-directed analgesia for dental pain. Expert Rev Clin Pharmacol. 2023;16(5):435-451.

4.-

Toothache. National Health Services NHS [Internet]. October 27, 2020 [cited 2023 Jul 19]. Available from: https://www.nhs.uk/conditions/toothache/.

5.-

Ahmadi H, Ebrahimi A, Ahmadi F. Antibiotic Therapy in Dentistry. Int J Dent. 2021;2021:6667624.

6.-

MedlinePlus [Internet]. Bethesda (MD): National Library of Medicine (US);2023. Diphenhydramine; [updated 2022 Jan 15; cited 2023 Jul 19]. Available from: https://medlineplus.gov/druginfo/meds/a682539.html.