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standards of non-Merck sources.
Medication Safety Issues
Sound-alike/look-alike issues:
Pentrax® may be confused with Permax®
Tegrin® may be confused with Tegretol®
Pronunciation
(KOLE tar)
U.S. Brand Names
Index Terms
Generic Available
No
Canadian Brand Names
Pharmacologic Category
Use: Labeled Indications
Topically for controlling dandruff, seborrheic dermatitis, or psoriasis
Pregnancy Risk Factor
C
Contraindications
Hypersensitivity to coal tar or any component of the formulation
Warnings/Precautions
Concerns related to adverse effects:
• Photosensitivity: May increase photosensitivity; avoid exposure to direct sunlight for 24 hours following application.
Other warnings/precautions:
• Appropriate use: For external use only; avoid contact with eyes, genital/rectal areas.
Adverse Reactions
Frequency not defined: Dermatologic: Dermatitis, folliculitis. irritation, photosensitivity
Drug Interactions
There are no known significant interactions.
Dosage
Topical:
Bath: Add appropriate amount to bath water; for adults usually 60-90 mL of a 5% to 20% solution or 15-25 mL of 30% lotion; soak 5-20 minutes, then pat dry; use once daily to 3 days
Shampoo: Rub shampoo onto wet hair and scalp, rinse thoroughly; repeat; leave on 5 minutes; rinse thoroughly; apply twice weekly for the first 2 weeks then once weekly or more often if needed
Soap: Use on affected areas in place of regular soap. Work into a lather using warm water; massage into skin; rinse.
Skin: Apply to the affected area 1-4 times/day; decrease frequency to 2-3 times/week once condition has been controlled
Scalp psoriasis: Tar oil bath or coal tar solution may be painted sparingly to the lesions 3-12 hours before each shampoo
Psoriasis of the body, arms, legs: Apply at bedtime; if thick scales are present, use product with salicylic acid and apply several times during the day
Dental Health: Effects on Dental Treatment
No significant effects or complications reported
Dental Health: Vasoconstrictor/Local Anesthetic Precautions
No information available to require special precautions
Mental Health: Effects on Mental Status
None reported
Mental Health: Effects on Psychiatric Treatment
None reported
Dosage Forms
Excipient information presented when available (limited, particularly for generics); consult specific product labeling. [DSC] = Discontinued product
Cream:
Fototar®: Coal tar 2% (85 g, 454 g)
Emulsion, topical:
Cutar®: Coal tar solution 7.5% (180 mL, 3840 mL)
Exorex®: Coal tar 1% (240 mL)
Gel, shampoo:
DHS™ Targel: Coal tar solution 2.9% (240 mL) [equivalent to coal tar 0.5%]
Liquid:
Doak® Tar Distillate: Coal tar 40% (60 mL) [for compounding use only]
Lotion, topical:
MG 217®: Coal tar solution 5% (120 mL) [equivalent to coal tar 1%; contains jojoba]
Oxipor® VHC: Coal tar solution 25% (60 mL, 120 mL) [equivalent to coal tar 5%; contains alcohol 79%]
Oil, topical:
Balnetar®: Coal tar 2.5% (225 mL) [for use in bath]
Doak® Tar: Coal tar distillate 2% (240 mL) [equivalent to coal tar 0.8%; for use in bath]
Ointment, topical:
MG 217®: Coal tar solution 10% (107 g, 430 g) [equivalent to coal tar 2%]
Shampoo:
Betatar Gel®: Coal tar solution 5% (240 mL) [equivalent to coal tar 2.5%; green apple scent]
Denorex® Original Therapeutic Strength: Coal tar solution 12.5% (120 mL, 240 mL, 360 mL) [equivalent to coal tar 2.5%; available with or without conditioner]
DHS™ Tar: Coal tar solution 2.9% (120 mL, 240 mL, 480 mL) [equivalent to coal tar 0.5%]
Doak® Tar: Coal tar distillate 3% (240 mL) [equivalent to coal tar 1.2%]
Ionil T® Plus: Coal tar 2% (240 mL) [DSC]
MG 217® Medicated Tar: Coal tar solution 15% (120 mL, 240 mL) [equivalent to coal tar 3%]
Neutrogena® T/Gel: Coal tar 0.5% (132 mL, 255 mL, 480 mL)
Neutrogena® T/Gel Extra Strength: Coal tar extract 4% (132 mL) [coal tar 1%]
Neutrogena® T/Gel Stubborn Itch Control: Coal tar extract 2% (132 mL) [coal tar 0.5%]
Polytar®: Coal tar 0.5% (177 mL)
Reme-T™: Coal tar 5% (236 mL)
Tera-Gel™: Solubilized coal tar 0.5% (120 mL, 240 mL)
Zetar®: Coal tar 1% (180 mL)
Soap (Polytar®): Coal tar 0.5% (113 g)
International Brand Names
Lexi-Comp.com
Last full review/revision August 2008
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