Category: D

An iodine-containing substance produced in the thyroid gland from which the thyroid hormones are derived.  

An antiseptic used to treat bowel infections and dysentery. It is administered by mouth or as pessaries and occasionally causes irritation of the digestive system, headache, itching, and boils.  

A derivative of ergotamine tartrate used to prevent and relieve migraine attacks. It is administered by mouth or injection; side-effects are rare but nausea sometimes occurs.  

A drug used to lower blood pressure in moderate hypertension. It is administered by mouth, often in combination with reserpine or other hypotensive agents, since side-effects (fast heart rate, headache, loss of appetite, nausea, and vomiting) may be severe.  

An anthelmintic drug that destroys filariae and is therefore used in the treatment of filariasis, loiasis, and onchocerciasis. It is administered as tablets. Side-effects may include headache, malaise, joint points, nausea, and vomiting.  

An insecticide that attacks the central nervous system of insects and has proved useful in the control of various beetles, flies, and larvae that attack crops. Because of its toxic effects, there has been considerable anxiety over its widespread use in situations where food may be contaminated. An effective insecticide toxic to a wide range…

A drug that reduces spasms of smooth muscle and is used to relieve peptic ulcer, infantile colic, colitis, and related conditions. It is administered by mouth; side-effects include dry mouth, thirst, and dizziness.  

A tumor of the epithelium lining the ciliary body of the eye. It may be benign or malignant.  

Describing the state of color vision of those who can appreciate only two of the three primary colors. People with such vision match any given color by a mixture of the two they can distinguish.  

An anthelmintic drug used to treat human tapeworm infestation. It is administered by mouth and commonly causes abdominal pain and discomfort, diarrhea, nausea, and vomiting.