U.S. flag

An official website of the United States government

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.

StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-.

Cover of StatPearls

StatPearls [Internet].

Show details

Vitamin B5 (Pantothenic Acid)

; .

Author Information and Affiliations

Last Update: June 19, 2023.

Continuing Education Activity

Vitamin B5 is a medication used in the management and treatment of nutrient deficiencies. It is in the dietary supplement class of medications. This activity reviews the indications, actions, and contraindications for vitamin B5 as a valuable agent in treating nutritional deficiencies. This activity will highlight the mechanism of action, adverse event profile, and other key factors in the treatment of patients with nutritional deficiencies and related conditions.


  • Describe the indications for vitamin B5 usage.
  • Review the mechanism of action for vitamin B5.
  • Explain the methods of drug administration.
  • Identify risks associated with an overdose of vitamin B5.
Access free multiple choice questions on this topic.


Vitamin B5 (pantothenic acid) supplements are not subject to initial review by the U.S. Food and Drug Administration (FDA). The agency does not have the authority to examine dietary supplement products for safety and effectiveness prior to marketing. Out of all the drugs listed in this indications section, only panthenol and dexpanthenol are approved by the FDA for use in cosmetics. All other indications listed are non-FDA approved.

Vitamin B5 is a naturally occurring substance found in various plants and animals (i.e., eggs, milk, vegetables, beef, chicken, and whole grains). It is also artificially added to foods. B5 deficiency is generally rare since the vitamin is present in many foods. However, it can present in people with severe malnutrition. An individual with vitamin B5 deficiency commonly has deficiencies in other nutrients, which can make it challenging to identify the effects that are specific to vitamin B5 deficiency. An experimental vitamin B5 deficiency study associated the deficiency with symptoms such as fatigue, headache, malaise, personality changes, numbness, muscle cramps, paresthesia, muscle/ abdominal cramps, nausea, and impaired muscle coordination.[1]

Individuals with a mutation in their pantothenate kinase 2 (PANK2) gene are likely to have a pantothenic acid inadequacy as well. Enough PANK2 mutations reduce the activity of pantothenate kinase 2, which can potentially decrease the conversion of pantothenic acid to coenzyme A (CoA) and lead to reduced CoA levels. PANK2 gene mutations also cause pantothenate kinase-associated neurodegeneration (PKAN). A common hallmark of individuals with PKAN is an accumulation of iron in the brain that forms a pattern called the "eye of the tiger" sign.[2] This disease also presents with a progressive movement disorder, and other symptoms may vary significantly from case to case. Symptoms include dysarthria, dystonia, poor balance, spasticity, and muscle rigidity. Treatment of this condition focuses mainly on reducing symptoms. A few anecdotal reports indicate that vitamin B5 supplements can reduce symptoms, but the benefits of the general use of this supplement in PKAN are not known.[3]

The usage of vitamin B5 is prevalent within the field of dermatology. There is a growing interest in the various effects of nonsteroidal anti-inflammatory drugs (NSAIDs).[4] This interest has led to a study that compares the effectiveness of dexpanthenol (an alcoholic analog of D-pantothenic acid) as an alternative treatment to atopic dermatitis against a standard treatment of hydrocortisone. Overall, the study found that dexpanthenol can potentially treat mild to moderate childhood atopic dermatitis therapy.[5] Other research suggests that dexpanthenol cream can be useful in managing mucocutaneous side effects that occur during isotretinoin therapy.[6] Isotretinoin therapy is used as a treatment for acne, and its mucocutaneous side effects include dryness of mucous membranes, cheilitis, and xerosis. 

Clinical studies have shown the evaluation of dexpanthenol in wound healing applications. These small clinical trials used the drug as a pastille and or spray to heal wounds in postoperative endotracheal intubation, endoscopic sinus surgery, and tonsillectomy.[7][8][9] The use of dexpanthenol shows better clinical outcomes in these clinical trials. Regardless, further studies are necessary to generalize drug efficacy. 

Dyslipidemia is another field that can potentially use vitamin B5. Since vitamin B5 is essential for the biosynthesis of coenzyme A, it plays a role in the metabolism of lipids. One study concluded that pantethine (a derivate of vitamin B5) lowered cardiovascular disease risk markers in low to moderate-risk participants.[10] These risk markers include LDL, HDL, and total cholesterol. 

Pantothenate deficiency can play a vital role in Ach deficiency, neurodegeneration, myelin loss, and age-related dementias like Huntington disease.[11] Nevertheless, more studies are still needed to test the clinical efficacy of vitamin B5 in these conditions.

Mechanism of Action

Vitamin B5 is exclusively a precursor in the synthesis of CoA and thus only directly affects this metabolic pathway. CoA has a role in hundreds of human biochemical reactions, such as cell growth, intermediary metabolism, and neurotransmitter synthesis.[12][13] The structure of CoA functions as a carbonyl-activating group and as an acyl group carrier to help facilitate these various reactions.[14]


Dietary supplements of vitamin B5 are available as vitamin B5 exclusively or in combination with other vitamins in multivitamin/multimineral products. Patients normally administer these supplements orally. Depending on the application, derivatives of vitamin B5 can be applied topically and even through injection using IV formulas. Dexpanthenol administration can be via an oral spray applied in the mouth.[9]

Adverse Effects

Vitamin B5 doses are age-dependent and if the patient is pregnant or lactating. Doses greater than 10 g/day may cause mild diarrhea or mild intestinal distress.[15] There have been cases reported of allergic contact dermatitis with the topical use of panthenol cream and dexpanthenol.[16][17]


The following drugs have moderate interactions with vitamin B5:

  • Azithromycin
  • Clarithromycin
  • Erythromycin base
  • Erythromycin ethyl succinate
  • Erythromycin lactobionate
  • Erythromycin stearate
  • Roxithromycin

Furthermore, there are at least 60 other drugs that have mild interactions with vitamin B5. Other contraindications include patients with hypersensitivity or allergy to the drug or any of its derivatives. A report suggests that vitamin B5 intake might correlate with increased cerebral amyloid-beta peptide burden in individuals with cognitive impairment.[18] Although further studies are still needed to confirm the findings and discover the molecular mechanisms of this pathway, the current research suggests those with cognitive impairment to be a potential contraindication.[18]


Vitamin B5 is considered relatively safe. Dosages above the recommended amount can induce mild diarrhea/ intestinal distress. Allergic reactions and hypersensitivity can occur with the derivatives of vitamin B5 as well.

Recommended Daily Intake [19] [20] [21] [22] [23]

  • Take with food if administered orally
  • Men and Women over 19 years and older: 5 mg/day
  • Pregnant women: 6 mg/day
  • Lactating women: 7 mg/day
  • Children under 6 months: 1.7 mg/day
  • Children 7 to 12 months: 1.8 mg/day
  • Children 1 to 3 years: 2 mg/day
  • Children 4 to 8 years: 3 mg/day
  • Children 9 to 13 years: 4 mg/day
  • Children 14 to 18 years: 5 mg/day


As previously stated, vitamin B5 is considered generally safe.[15] There are currently no upper limits established since there have been no reports of vitamin B5 toxicity in humans with high intakes. However, there are still side effects involved with the administration of this drug, which include the following (these lists are not all-inclusive):

Common Side Effects

  • Muscle pain
  • Joint pain
  • Diabetes mellitus, new-onset
  • Sore throat
  • Headache
  • Weakness/lack of energy
  • Dizziness 
  • Creatine phosphokinase (CPK) increased
  • Nausea 
  • Abdominal pain
  • Alanine transaminase (ALT) increased
  • Constipation 
  • Flulike illness
  • Urinary tract infection (UTI) 
  • Hypersensitivity reactions (including rash, itching, hives, and swelling)
  • Pancreatitis

Less Common Side Effects

  • Yellowing skin and eyes (jaundice)
  • Muscle disease
  • Muscle wasting (rhabdomyolysis)

Enhancing Healthcare Team Outcomes

Vitamin B5 levels are obtainable through either blood or urine tests. The proper evaluation and classification of nutrient deficiencies lead to improved patient healthcare outcomes. Cohesiveness and open communication among the members of a patient’s interprofessional healthcare team allow for optimal therapy and necessary interventions. This team will include clinicians, nurses, pharmacists, and dieticians, all engaged in open communication and working collaboratively to achieve optimal patient outcomes. [Level 5]

Review Questions


HODGES RE, OHLSON MA, BEAN WB. Pantothenic acid deficiency in man. J Clin Invest. 1958 Nov;37(11):1642-57. [PMC free article: PMC1062846] [PubMed: 13587673]
Dezfouli MA, Jaberi E, Alavi A, Rezvani M, Shahidi G, Elahi E, Rohani M. Pantothenate kinase 2 mutation with eye-of-the-tiger sign on magnetic resonance imaging in three siblings. Iran J Neurol. 2012;11(4):155-8. [PMC free article: PMC3829266] [PubMed: 24250886]
Kurian MA, Hayflick SJ. Pantothenate kinase-associated neurodegeneration (PKAN) and PLA2G6-associated neurodegeneration (PLAN): review of two major neurodegeneration with brain iron accumulation (NBIA) phenotypes. Int Rev Neurobiol. 2013;110:49-71. [PMC free article: PMC6059649] [PubMed: 24209433]
Gunaydin C, Bilge SS. Effects of Nonsteroidal Anti-Inflammatory Drugs at the Molecular Level. Eurasian J Med. 2018 Jun;50(2):116-121. [PMC free article: PMC6039135] [PubMed: 30002579]
Udompataikul M, Limpa-o-vart D. Comparative trial of 5% dexpanthenol in water-in-oil formulation with 1% hydrocortisone ointment in the treatment of childhood atopic dermatitis: a pilot study. J Drugs Dermatol. 2012 Mar;11(3):366-74. [PubMed: 22395588]
Romiti R, Romiti N. Dexpanthenol cream significantly improves mucocutaneous side effects associated with isotretinoin therapy. Pediatr Dermatol. 2002 Jul-Aug;19(4):368. [PubMed: 12220290]
Gulhas N, Canpolat H, Cicek M, Yologlu S, Togal T, Durmus M, Ozcan Ersoy M. Dexpanthenol pastille and benzydamine hydrochloride spray for the prevention of post-operative sore throat. Acta Anaesthesiol Scand. 2007 Feb;51(2):239-43. [PubMed: 17073853]
Tantilipikorn P, Tunsuriyawong P, Jareoncharsri P, Bedavanija A, Assanasen P, Bunnag C, Metheetrairut C. A randomized, prospective, double-blind study of the efficacy of dexpanthenol nasal spray on the postoperative treatment of patients with chronic rhinosinusitis after endoscopic sinus surgery. J Med Assoc Thai. 2012 Jan;95(1):58-63. [PubMed: 22379743]
Celebi S, Tepe C, Yelken K, Celik O. Efficacy of dexpanthenol for pediatric post-tonsillectomy pain and wound healing. Ann Otol Rhinol Laryngol. 2013 Jul;122(7):464-7. [PubMed: 23951700]
Evans M, Rumberger JA, Azumano I, Napolitano JJ, Citrolo D, Kamiya T. Pantethine, a derivative of vitamin B5, favorably alters total, LDL and non-HDL cholesterol in low to moderate cardiovascular risk subjects eligible for statin therapy: a triple-blinded placebo and diet-controlled investigation. Vasc Health Risk Manag. 2014;10:89-100. [PMC free article: PMC3942300] [PubMed: 24600231]
Ismail N, Kureishy N, Church SJ, Scholefield M, Unwin RD, Xu J, Patassini S, Cooper GJS. Vitamin B5 (d-pantothenic acid) localizes in myelinated structures of the rat brain: Potential role for cerebral vitamin B5 stores in local myelin homeostasis. Biochem Biophys Res Commun. 2020 Jan 29;522(1):220-225. [PMC free article: PMC6977085] [PubMed: 31759626]
Leonardi R, Jackowski S. Biosynthesis of Pantothenic Acid and Coenzyme A. EcoSal Plus. 2007 Apr;2(2) [PMC free article: PMC4950986] [PubMed: 26443589]
Hayflick SJ. Defective pantothenate metabolism and neurodegeneration. Biochem Soc Trans. 2014 Aug;42(4):1063-8. [PMC free article: PMC5906047] [PubMed: 25110003]
Davaapil H, Tsuchiya Y, Gout I. Signalling functions of coenzyme A and its derivatives in mammalian cells. Biochem Soc Trans. 2014 Aug;42(4):1056-62. [PubMed: 25110002]
Chawla J, Kvarnberg D. Hydrosoluble vitamins. Handb Clin Neurol. 2014;120:891-914. [PubMed: 24365359]
Bregnbak D, Johansen JD, Zachariae C. Contact dermatitis caused by panthenol used for aftercare treatment of a new tattoo. Contact Dermatitis. 2016 Jul;75(1):50-2. [PubMed: 27264289]
Chin MF, Hughes TM, Stone NM. Allergic contact dermatitis caused by panthenol in a child. Contact Dermatitis. 2013 Nov;69(5):321-2. [PubMed: 24117747]
Lee JH, Ahn SY, Lee HA, Won KS, Chang HW, Oh JS, Kim HW. Dietary intake of pantothenic acid is associated with cerebral amyloid burden in patients with cognitive impairment. Food Nutr Res. 2018;62 [PMC free article: PMC6294831] [PubMed: 30574044]
Pannia E, Cho CE, Kubant R, Sánchez-Hernández D, Huot PS, Harvey Anderson G. Role of maternal vitamins in programming health and chronic disease. Nutr Rev. 2016 Mar;74(3):166-80. [PMC free article: PMC4892288] [PubMed: 26883881]
Elliott C. Assessing Vitamins, Minerals and Supplements Marketed to Children in Canada. Int J Environ Res Public Health. 2019 Nov 06;16(22) [PMC free article: PMC6888471] [PubMed: 31698815]
Adams JB, Audhya T, McDonough-Means S, Rubin RA, Quig D, Geis E, Gehn E, Loresto M, Mitchell J, Atwood S, Barnhouse S, Lee W. Effect of a vitamin/mineral supplement on children and adults with autism. BMC Pediatr. 2011 Dec 12;11:111. [PMC free article: PMC3266205] [PubMed: 22151477]
Y de Vries J, Pundir S, Mckenzie E, Keijer J, Kussmann M. Maternal Circulating Vitamin Status and Colostrum Vitamin Composition in Healthy Lactating Women-A Systematic Approach. Nutrients. 2018 May 28;10(6) [PMC free article: PMC6024806] [PubMed: 29843443]
Institute of Medicine (US) Standing Committee on the Scientific Evaluation of Dietary Reference Intakes and its Panel on Folate, Other B Vitamins, and Choline. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline. National Academies Press (US); Washington (DC): 1998. [PubMed: 23193625]

Disclosure: Terrence Sanvictores declares no relevant financial relationships with ineligible companies.

Disclosure: Shaylika Chauhan declares no relevant financial relationships with ineligible companies.

Copyright © 2024, StatPearls Publishing LLC.

This book is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ), which permits others to distribute the work, provided that the article is not altered or used commercially. You are not required to obtain permission to distribute this article, provided that you credit the author and journal.

Bookshelf ID: NBK563233PMID: 33085380


  • PubReader
  • Print View
  • Cite this Page

Related information

  • PMC
    PubMed Central citations
  • PubMed
    Links to PubMed

Similar articles in PubMed

See reviews...See all...

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...