| Food pharmacology. N Sapeika | 47 | 1969 |
| An experimental study of senecio poisoning in rats G Selzer, RGF Parker, N Sapeika British Journal of Experimental Pathology 32 (1), 14, 1951 | 42 | 1951 |
| The Excretion of Drugs in Human Milk—A Review N Sapeika BJOG: An International Journal of Obstetrics & Gynaecology 54 (4), 426-431, 1947 | 36 | 1947 |
| The cause of mussel poisoning in South Africa N Grindley, JR* & Sapeika South African Medical Journal 43 (10), 275-279, 1969 | 33 | 1969 |
| Adrenal cortex and arterial hypertension N SAPEIKA Archives of Internal Medicine 82 (3), 263-309, 1948 | 29 | 1948 |
| Determination of the tyramine content of South African cheeses by gas-liquid chromatography ER Kaplan, N Sapeika, IM Moodie Analyst 99 (1182), 565-569, 1974 | 27 | 1974 |
| Caffeine content of tea and coffee N Kaplan, E., Holmes, JH & Sapeika South African Medical Journal 48 (12), 510-511, 1974 | 25 | 1974 |
| Mussel poisoning N Sapeika South African Medical Journal 22 (10), 337-338, 1948 | 23 | 1948 |
| Lead EDTA complex-a water-soluble contrast medium N Sapeika South African Medical Journal 28 (36), 759-762, 1954 | 21 | 1954 |
| Effect of the antiepileptic drug sodium valproate on induction of hepatic microsomal P450. N Sapeika, ER Kaplan Research communications in chemical pathology and pharmacology 10 (4), 767-768, 1975 | 20 | 1975 |
| Actions of mussel poison N Sapeika Archives Internationales de Pharmacodynamie et de Therapie 93 (2), 135-142, 1953 | 18 | 1953 |
| The senecio alkaloids N Sapeika South African Medical Journal 26 (24), 485-488, 1952 | 18 | 1952 |
| Radiographic use of lead EDTA in man N Sapeika British Medical Journal 2 (4932), 167, 1955 | 16 | 1955 |
| The effect of chlorpromazine, iproniazid, and chloroquine on adrenal ascorbic acid in the rat N Sapeika Archives internationales de pharmacodynamie et de therapie 122, 196-200, 1959 | 15 | 1959 |
| Antagonism of digitalis action by ethylenediamine tetraacetic acid. N Sapeika Archives Internationales de Pharmacodynamie et de Therapie 97 (3-4), 373-378, 1954 | 15 | 1954 |
| The adrenal cortex and hypertensive disease N SAPEIKA AMA Archives of Internal Medicine 96 (5), 654-666, 1955 | 11 | 1955 |
| Lead EDTA complex-further radiographic studies N Sapeika South African Medical Journal 28 (45), 953-956, 1954 | 11 | 1954 |
| Effect of certain drugs on the ascorbic acid content of the liver and adrenal glands in rats N Sapeika British Journal of Experimental Pathology 33 (3), 223, 1952 | 11 | 1952 |
| Drugs in obesity N Sapeika South African Medical Journal 48 (48), 2027-2030, 1974 | 10 | 1974 |
| Actions and uses of drugs N Sapeika AA Balkema, 1972 | 10 | 1972 |
