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Mineral Oil

Also indexed as: Agoral®, Kondremul Plain®, Milkinol®, Neo-Cultol®, Petrogalar Plain®

Mineral oil is a laxative used to soften stools in people with constipation. Mineral oil is also used as a vehicle to carry other ingredients in some topical skin products.

Interactions with Dietary Supplements

Vitamins and minerals
Mineral oil has interfered with the absorption of many nutrients, including beta-carotene, calcium, phosphorus, potassium, and vitamins A, D, K, and E in some,1 but not all,2 research. Taking mineral oil on an empty stomach may reduce this interference. It makes sense to take a daily multivitamin-mineral supplement two hours before or after mineral oil. It is important to read labels, because many multivitamins do not contain vitamin K or contain inadequate (less than 100 mcg per day) amounts.

Summary of Interactions for Mineral Oil

Depletion or interference Beta-carotene
Calcium*
Phosphorus*
Potassium*
Vitamin A*
Vitamin D*
Vitamin E*
Vitamin K*
Adverse interaction None known
Side effect reduction/prevention None known
Supportive interaction None known
Reduced drug absorption/bioavailability None known

For the convenience of the reader, the information in the summary is categorized as follows: “Depletion or interference” indicates the drug may deplete or interfere with the absorption or function of the supplement or herb. “Adverse interaction” indicates that the supplement or herb used together with the drug may result in undesirable effects. “Side effect reduction/prevention” indicates the supplement or herb may reduce the likelihood and/or severity of a potential side effect caused by the drug. “Supportive interaction” indicates the supplement or herb may support or aid the function of the drug. “Reduced drug absorption/bioavailability” indicates that the supplement or herb may decrease the absorption and/or activity of the drug in the body. An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.

References:

1. Holt GA. Food & Drug Interactions. Chicago: Precept Press, 1998, 176.

2. Clark JH, Russell GJ, Fitzgerald JF, Nagamori KE. Serum beta-carotene, retinol, and alpha-tocopherol levels during mineral oil therapy for constipation. Am J Dis Child 1987;141:1210–2.