Dexpanthenol
Provitamin B5 to support wound healing and mucous membrane care
Dexpanthenol is the alcohol analogue of pantothenic acid (vitamin B5) and is rapidly converted to biologically active pantothenic acid after uptake into the body. As provitamin B5, dexpanthenol is able to penetrate skin, mucous membranes, and tissue, acting there as a precursor to coenzyme A (CoA), which is indispensable for numerous metabolic reactions. In medicine and pharmacy, dexpanthenol is widely used in topical preparations to support wound healing, mucous membrane care, and the treatment of dry skin.
Well-known branded preparations containing dexpanthenol include Bepanthen, Panthenol, and various nasal sprays and eye drops. The active ingredient is available in creams, ointments, lotions, gels, nasal drops, eye drops, and injection solutions. Dexpanthenol is considered well-tolerated and is also suitable for use in infants, pregnant women, and nursing mothers, making it a particularly versatile active ingredient.
Mechanism of Action
After topical or systemic administration, dexpanthenol is converted to pantothenic acid by oxidation. Pantothenic acid is a building block of coenzyme A (CoA) and acyl carrier protein (ACP), which play central roles in fatty acid metabolism, the citric acid cycle, and the biosynthesis of numerous biomolecules.
At the cellular level, dexpanthenol stimulates the proliferation of fibroblasts, the key cells of wound healing. Fibroblasts synthesise collagen and extracellular matrix components that are essential for wound closure and scar formation. By increasing fibroblast activity and promoting collagen synthesis, epithelialisation is accelerated and the tensile strength of healing tissue is improved.
Furthermore, dexpanthenol acts as a humectant and increases the water content of the stratum corneum. This property protects the skin barrier and prevents excessive transepidermal water loss (TEWL). In the area of mucous membranes, dexpanthenol supports the regeneration of ciliated epithelium and improves mucosal integrity.
When administered systemically, dexpanthenol acts as a parasympathomimetic: it stimulates intestinal motility and is therefore administered intravenously or intramuscularly in paralytic ileus (intestinal paralysis).
Indications
- Wound healing: Superficial wounds, first-degree burns, abrasions, insect bites, fissures on lips and nipples
- Dry and irritated skin: Eczema, xerosis cutis, nappy rash in infants, irritated areas from radiotherapy
- Nasal mucosa: Dry nasal mucosa, post-operative care after nasal surgery, rhinitis sicca
- Ocular mucosa: Dry eyes (keratoconjunctivitis sicca), irritated eyes after screen work or in dry environments
- Scar treatment: Promotion of fresh scar maturation, prophylaxis of hypertrophic scar formation
- Paralytic ileus: Intravenous or intramuscular application to stimulate intestinal motility post-operatively
- Breastfeeding: Cream for the care of sore or cracked nipples; safe for the newborn when used as directed
Dosage and Application
Topical (skin and mucous membranes): Apply several times daily to the affected areas; apply thinly to wounds after cleaning and drying. Occlusive dressings are generally not necessary. For nappy rash, apply at each nappy change. Products for the nose (nasal spray, drops, gel) one to three times daily in each nostril. Eye drops one to several times daily depending on the severity of dryness.
Systemic (intravenous/intramuscular): 500 mg to 1000 mg daily for paralytic ileus, administered as a slow infusion; dosage and duration as directed by a physician. Systemic use occurs exclusively in a clinical setting.
Side Effects
Dexpanthenol is considered very well tolerated. Undesirable effects are rare and usually minor:
Occasional: Local skin reactions such as contact dermatitis, redness, or itching. These may be attributable to dexpanthenol itself or to excipients in the formulation (e.g. fragrances, lanolin).
Rare: True contact allergies to dexpanthenol are very rarely documented. If an allergic reaction occurs, the preparation should be discontinued. With systemic administration, gastrointestinal complaints may occasionally occur.
Due to its favourable safety profile, dexpanthenol is one of the few active ingredients that can be applied topically without concern in newborns, pregnant women, and nursing mothers.
Interactions
With topical use, no relevant interactions with other medications are known. Dexpanthenol is chemically and pharmacologically inert towards most other topically applied substances.
With systemic (intravenous) use, dexpanthenol can prolong the effect of succinylcholine (a muscle relaxant), as pantothenic acid is involved in the regulation of cholinesterase-dependent processes. This effect is clinically relevant and should be considered during anaesthetic procedures.
Combination with other topical wound care products (iodine, hydrogen peroxide) should be avoided, as these can damage the wound-healing fibroblasts while dexpanthenol aims to promote their proliferation.
Special Notes
Pregnancy and breastfeeding: Dexpanthenol is classified as safe for topical use. There are no indications of embryotoxic or teratogenic effects. Pantothenic acid is an essential nutrient required in higher amounts during pregnancy. Nursing mothers may use dexpanthenol cream on the nipples; the product should be wiped off before breastfeeding.
Children and infants: Topical products with dexpanthenol are suitable for infants and young children and are widely used for the treatment of nappy rash and skin irritations.
Eyes: Eye drops containing dexpanthenol can also be used with contact lenses (depending on the formulation); product instructions should be observed. Soft contact lenses should be removed before applying certain formulations.
Frequently Asked Questions
Is dexpanthenol the same as panthenol?
Dexpanthenol and panthenol are often synonymous terms. Dexpanthenol is the dextrorotatory (D-) form of panthenol and the biologically active form; in pharmaceuticals and cosmetics, dexpanthenol or a mixture of both forms is usually used. The efficacy relates to the dexpanthenol component.
How quickly does dexpanthenol work on wounds?
A moisturising and protective effect sets in immediately after application. The promotion of wound healing through increased fibroblast proliferation is a biological process that unfolds over several days. First visible improvements (less redness, better epithelialisation) typically appear after 3 to 7 days with fresh wounds.
Can dexpanthenol cream be applied to open wounds?
Yes, dexpanthenol cream is suitable for application on superficial, clean wounds. Deep wounds, severely infected wounds, or burns of more serious degrees should, however, be treated by a physician.
References
- Product information Bepanthen Wound and Healing Ointment (Bayer), as of 2024
- Ebner F et al.: Topical use of dexpanthenol in skin disorders. American Journal of Clinical Dermatology, 2002
- European Medicines Agency (EMA): Monograph Dexpanthenol
- Federal Institute for Drugs and Medical Devices (BfArM): Product monograph Dexpanthenol
- Proksch E, Nissen HP: Dexpanthenol enhances skin barrier repair and reduces inflammation after sodium lauryl sulphate-induced irritation. Journal of Dermatological Treatment, 2002