The following is a partial list of the "D" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). This list continues the information at List of MeSH codes (D02). Codes following these are found at List of MeSH codes (D04). For other MeSH codes, see List of MeSH codes. The source for this content is the set of 2006 MeSH Trees from the NLM. – heterocyclic compounds – acids, heterocyclic – cinoxacin – indoleacetic acids – etodolac – hydroxyindoleacetic acid – isonicotinic acids – ethionamide – iproniazid – isoniazid – nialamide – prothionamide – pyridoxic acid – isonipecotic acids – diphenoxylate – meperidine – promedol – phenoperidine – pirinitramide – nicotinic acids – arecoline – clonixin – etazolate – niacin – niacinamide – 6-aminonicotinamide – nicorandil – nikethamide – niceritrol – niflumic acid – pipemidic acid – piromidic acid – xanthinol niacinate – nipecotic acids – orotic acid – picolinic acids – fusaric acid – picloram – streptonigrin – pipecolic acids – xanthurenates – kynurenic acid – alkaloids – aconitine – acronine – amaryllidaceae alkaloids – galantamine – aporphines – apomorphine – arecoline – berberine alkaloids – berberine – bicuculline – camptothecin – topotecan – cinchona alkaloids – quinidine – quinine – colchicine – demecolcine – lumicolchicines – dihydro-beta-erythroidine – emetine – ergot alkaloids – ergolines – ergonovine – methylergonovine – lisuride – lysergic acid – lysergic acid diethylamide – metergoline – methysergide – nicergoline – pergolide – ergotamines – bromocriptine – dihydroergocornine – dihydroergocristine – dihydroergocryptine – dihydroergotamine – dihydroergotoxine – ergoloid mesylates – ergotamine – harringtonines – indole alkaloids – curare – toxiferine – alcuronium – tubocurarine – harmaline – harmine – physostigmine – psilocybine – secologanin tryptamine alkaloids – ajmaline – prajmaline – ellipticines – ibogaine – strychnine – vinca alkaloids – vinblastine – vincamine – vincristine – vindesine – yohimbine – reserpine – staurosporine – lobeline – mescaline – muscarine – opium – morphinans – benzomorphans – pentazocine – phenazocine – buprenorphine – butorphanol – dextrorphan – diprenorphine – etorphine – levallorphan – levorphanol – dextromethorphan – morphine – morphine derivatives – codeine – hydrocodone – oxycodone – dihydromorphine – ethylmorphine – heroin – hydromorphone – oxymorphone – thebaine – nalbuphine – nalorphine – naloxone – naltrexone – noscapine – papaverine – tetrahydropapaveroline – pilocarpine – pyrrolizidine alkaloids – monocrotaline – ryanodine – salsoline alkaloids – solanaceous alkaloids