Docusate

Also indexed as: Colace®

Docusate, which is available without a prescription, is used to treat constipation and is in a class of laxatives known as stool softeners.

Summary of Interactions with Vitamins, Herbs, and Foods
(for details about the summarized interactions, read the full article)

Beneficial May be Beneficial: Depletion or interference—The medication may deplete or interfere with the absorption or function of the nutrient. Taking these nutrients may help replenish them.

Magnesium*

Potassium*

Side effect reduction/prevention

None known

Supportive interaction

None known

Reduced drug absorption/bioavailability

None known

Adverse interaction

None known

An asterisk (*) next to an item in the summary indicates that the interaction is supported only by weak, fragmentary, and/or contradictory scientific evidence.

Interactions with Dietary Supplements

Magnesium
A woman and her newborn infant experienced low blood levels of magnesium, which was possibly due to chronic use of docusate throughout and after pregnancy.1 Controlled research is necessary to determine whether people taking docusate for long periods of time need to supplement magnesium.

Potassium
Taking docusate increases the amount of potassium excreted from the body in the stool.2 Whether people taking docusate for long periods of time need to increase their intake of potassium is unknown.

References

1. Schindler AM. Isolated neonatal hypomagnesaemia associated with maternal overuse of stool softener. Lancet 1984;2:822 [letter].

2. Moriarty KJ, Kelly MJ, Beetham R, Clark ML. Studies on the mechanism of action of dioctyl sodium sulphosuccinate in the human jejunum. Gut 1985;26:1008–13.