Solanum capsicoides is a herbaceous, evergreen shrub that typically grows to 1-2 m in height, but can reach 3 m under favorable growing conditions. The leaves are 2.5–8 cm long and 0.7-3 cm broad, simple, ovate to oblong or lanceolate with a slightly wavy margin and an acute apex. The leaves are green to yellowish-green in color and paired or clustered on short stems along the main stem of the plant.
Inflorescences (clusters of flowers) are 2–7 cm long with a highly branched appearance. The individual flowers are small, approximately 1–2 cm in diameter, with five petals which are yellow to orange. The fruit of S. capsicoides is a berry that is typically spherical or pear-shaped, up to 6 cm long, white, greenish, or yellow when unripe, and red when ripe.
The species is a herbaceous, flowering plant with stems up to 0.5 m long. The leaves are alternate, ovate-lanceolate, 3–15 cm long, and 1–6 cm broad, with an entire margin and an acuminate apex. The flowers are white or purple corymbs of flowers 2–3 cm in diameter. The fruit is a pod 4–8 cm long and 2–3 mm broad, containing numerous seeds.
Solanum capsicoides have been introduced to many regions of the world for their medicinal uses as traditional medicine or use in agriculture. For example, the plant has been used to treat cancer, ringworm, and corns in China. In North America, Australia, and the Caribbean it is often used as a "green manure" to increase soil nitrogen content or as a companion plant to deter pests from nearby crops.
In some locations such as Gauteng Province of South Africa S. capsicoides has become naturalized and invasive. It has not yet been reported in the United States, but it is considered invasive in Mexico and Hawaii.
Solanum capsicoides is used for several medicinal purposes throughout its introduced range. In traditional medicine, the plant is used for stomach aches, tuberculosis, cancer, hypertension, ear infections, ringworm, corns on feet or hands, and skin wounds. S. capsicoides has anti-inflammatory properties which can aid in the treatment of prostate cancer or fungicidal activity against certain strains of Candida albicans, a species of yeast responsible for yeast infections.