Clonidine (drug interactions)

DEFINITION: A drug often used to reduce blood pressure and to counter symptoms that occur during withdrawal from alcohol and other addictive substances.

INTERACTIONS: Coenzyme Q10, Coleus forskohlii, Yohimbe, St. John's wort, ginseng, various prescription medications

TRADE NAME: Catapres

Coenzyme Q10 (CoQ10)

Effect: Supplementation Possibly Helpful

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There is some evidence that clonidine might impair the body’s ability to manufacture the substance CoQ10. However, it has not yet been shown that CoQ10 supplements offer any particular benefit to those taking this medication.

Yohimbe

Effect: Probable Dangerous Interaction

Persons taking clonidine should not take yohimbe.

Coleus forskohlii

Effect: Theoretical Interaction

The herb Coleus forskohlii relaxes blood vessels and might have unpredictable effects if combined with clonidine.

Other Interactions

Several other interactions can occur between clonidine and various herbs, supplements, and prescription medications. Patients should discuss all medications they are taking with their healthcare providers. Individuals taking clonidine should avoid herbs that lower blood pressure, such as garlic, hawthorn berry, and valerian root. Because clonidine also lowers blood pressure, supplementation with these herbs could cause hypotension. St. John's wort and ginseng should also be avoided when taking clonidine. Patients taking prescription medications that lower blood pressure, central nervous system depressants, tricyclic antidepressants, and digoxin should also avoid taking clonidine due to adverse effects.

Bibliography

Brinker, F. Herb Contraindications and Drug Interactions. 2d ed., Sandy, Oreg.: Eclectic Medical, 1998.

"Clonidine (Catapres)." Everyday Health, www.everydayhealth.com/drugs/clonidine. Accessed 10 Sept. 2024.

Kishi, H., et al. "Bioenergetics in Clinical Medicine. III: Inhibition of Coenzyme Q10-Enzymes by Clinically Used Anti-hypertensive Drugs." Research Communications in Chemical Pathology and Pharmacology, vol. 12, no. 3, 1975, pp. 533-540.

"Taking Clonidine with Other Medicines and Herbal Supplements." NHS, 10 Feb. 2023, www.nhs.uk/medicines/clonidine/taking-clonidine-with-other-medicines-and-herbal-supplements. Accessed 10 Sept. 2024.

Yasaei, Rama. "Clonidine - StatPearls." NCBI, 17 July 2023, www.ncbi.nlm.nih.gov/books/NBK459124. Accessed 10 Sept. 2024.