Herb-Drug Interactions

Publication Title: 
Journal of Psychopharmacology (Oxford, England)

We describe a patient with depression who was well controlled with sertraline monotherapy developing two relapses of depression in close temporal relationship with starting ayurvedic herbal mixtures. We discuss the possibility of a pharmacokinetic herb-drug interaction decreasing the therapeutic efficacy of sertraline leading to the relapses of depression. We speculate the herbal plant most likely to be responsible for this interaction is either Terminalia chebula or Commiphora wighteii.

Author(s): 
Prasad, K. P. R. C.
Tharangani, P. G. D.
Samaranayake, C. N.
Publication Title: 
BMC complementary and alternative medicine

BACKGROUND: Acinetobacter baumannii is well-recognized as an important nosocomial pathogen, however, due to their intrinsic resistance to several antibiotics, treatment options are limited. Synergistic effects between antibiotics and medicinal plants, particularly their active components, have intensively been studied as alternative approaches. METHODS: Fifty-one ethanol extracts obtained from 44 different selected medicinal plant species were tested for resistance modifying agents (RMAs) of novobiocin against A. baumannii using growth inhibition assay.

Author(s): 
Phatthalung, Pinanong Na
Chusri, Sasitorn
Voravuthikunchai, Supayang P.
Publication Title: 
Psychopharmacology

The action of copper (CuSO4, 5 mg/kg, oral) on selected neuropharmacological actions of cannabis resin (CI, oral) was studied on albino rats and mice. Copper potentiated the barbiturate hypnosis-potentiating activity of CI in albino rats and mice and had no effect on hypothermic activity in albino rats. Single doses of copper partially inhibited tolerance to barbiturate hypnosis-potentiation activity and markedly delayed the development of tolerance to hypothermic activity of CI. Oral as well as i.c.v.

Author(s): 
Singh, P. P.
Das, P. K.
Publication Title: 
Phytomedicine: International Journal of Phytotherapy and Phytopharmacology

This study investigated the effect of Danshen on the pharmacodynamic-pharmacokinetic (PD-PK) effects of midazolam, a model CYP3A probe substrate. The effects of acute and 3-day Danshen treatment on the pharmacokinetics of a low dose midazolam (10 mg/kg, i.p.) were determined in vivo in the rat. Danshen (200 mg/kg, i.p.) treatment decreased midazolam clearance by 16%, with increases in the AUC by 22% and the half-life by 14%. 3-Day Danshen treatment (200 mg/kg/day, i.p.) for 3 days decreased the clearance, with increases in the T(1/2) and AUC.

Author(s): 
Wang, Xin
Lee, Wayne Y. W.
Zhou, Xuelin
Or, Penelope M. Y.
Yeung, John H. K.
Publication Title: 
Molecules (Basel, Switzerland)

Celastrol, a quinone methide triterpene isolated from Tripterygium wilfordii Hook F., has various biochemical and pharmacological activities, and is now being developed as a promising anti-tumor agent. Inhibitory activity of compounds towards UDP-glucuronosyltransferase (UGT) is an important cause of clinical drug-drug interactions and herb-drug interactions. The aim of the present study is to investigate the inhibition of celastrol towards two important UDP-glucuronosyltransferase (UGT) isoforms UGT1A6 and UGT2B7.

Author(s): 
Zhang, Yong-sheng
Tu, Yan-yang
Gao, Xing-Chun
Yuan, Jun
Li, Gang
Wang, Liang
Deng, Jian-Ping
Wang, Qi
Ma, Ru-Meng
Publication Title: 
European archives of oto-rhino-laryngology: official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS): affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery

There is growing interest in complementary and alternative medicine (CAM) amongst the general population. Little information is available on CAM use in otolaryngology patients in the UK. Despite concerns over safety, efficacy and cost-effectiveness, CAM use is common amongst ENT patients. Patients perceive these medications as possible boosters to their immune system. It is becoming increasingly important that health care providers in all specialties ask their patients about CAM use and are aware of the implications it carries.

Author(s): 
Shakeel, Muhammad
Trinidade, Aaron
Ah-See, Kim W.
Publication Title: 
American Journal of Pharmaceutical Education

OBJECTIVE: To evaluate the impact of an innovative team-taught elective course on second-year (P2) students' knowledge and skills relating to the relationship between aromatherapy and pharmacy. DESIGN: An Aromatherapy Science elective course was offered to P2 students in an accelerated doctor of pharmacy (PharmD) degree program and was designed to provide an elective course experience while focusing on active-learning skills such as group work, student-led presentations, and in-class activities.

Author(s): 
Esposito, Emily R.
Bystrek, Mary V.
Klein, JoAnn S.
Publication Title: 
TheScientificWorldJournal

In India, Ayurveda has made a major contribution to the drug discovery process with new means of identifying active compounds. Recent advancement in bioavailability enhancement of drugs by compounds of herbal origin has produced a revolutionary shift in the way of therapeutics. Thus, bibliographic investigation was carried out by analyzing classical text books and peer-reviewed papers, consulting worldwide-accepted scientific databases from last 30 years.

Author(s): 
Dudhatra, Ghanshyam B.
Mody, Shailesh K.
Awale, Madhavi M.
Patel, Hitesh B.
Modi, Chirag M.
Kumar, Avinash
Kamani, Divyesh R.
Chauhan, Bhavesh N.
Publication Title: 
Archives of Internal Medicine

Herbal medicinals are being used by an increasing number of patients who typically do not advise their clinicians of concomitant use. Known or potential drug-herb interactions exist and should be screened for. If used beyond 8 weeks, Echinacea could cause hepatotoxicity and therefore should not be used with other known hepatoxic drugs, such as anabolic steroids, amiodarone, methotrexate, and ketoconazole. However, Echinacea lacks the 1,2 saturated necrine ring associated with hepatoxicity of pyrrolizidine alkaloids.

Author(s): 
Miller, L. G.
Publication Title: 
Lancet

Concurrent use of herbs may mimic, magnify, or oppose the effect of drugs.

Author(s): 
Fugh-Berman, A.

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