Jugo de Rana: The Frog Juice of the High Andes

Is Jugo de Rana an Ancient Andean Tradition?

In several Peruvian markets, vendors sell preparations known as jugo de rana: blended drinks made from frogs of the genus Telmatobius, promoted as remedies for fatigue, respiratory illness, sexual performance, and other conditions. Frog-based preparations are sold in parts of Peru as traditional or folk remedies, with vendors attributing a range of medicinal properties to them. How old the modern blended drink itself is, and how consistently it represents older Quechua or Aymara practice, is much less clear. Historical evidence suggests that frog consumption itself has changed over time. Reports from the early twentieth century described the Titicaca water frog as not locally eaten, while later decades documented consumption in soups, frog-leg trade, and eventually growing demand for blended "frog juice."

Market Preparations and Unverified Claims

Preparation methods vary significantly by vendor. While popular accounts often focus on a single spectacle, recipes differ widely. Some documented preparations use a freshly killed and skinned frog, while others briefly boil or cook it before blending. Common additions include maca root, honey, algarrobina syrup, or quail eggs.

Vendors claim a wide range of medicinal properties for the drink, marketing it for respiratory conditions and as a general tonic. Some vendors specifically promote it as an aphrodisiac. However, there is no established clinical evidence that frog juice treats any of these conditions, and Peruvian wildlife authorities explicitly note that the practice is based on beliefs without scientific support.

Telmatobius Species and Illegal Trade

Frog juice is associated with several Telmatobius species. The critically endangered Titicaca water frog (Telmatobius culeus) is repeatedly documented in illegal trade, but it should not be assumed that every drink sold as jugo de rana contains T. culeus. WCS notes that overexploitation of T. macrostomus has already been associated with substitution toward T. culeus, illustrating how demand can shift pressure between species.

Telmatobius culeus is legally protected in Peru, and unauthorized capture, possession, transport, and commercial sale of wildlife are prohibited under national forestry and wildlife laws. Illegal trade continues despite periodic enforcement operations. In 2019, SERFOR intercepted 2,517 Titicaca water frogs being transported toward Lima; authorities suspected they were intended for city markets and frog-extract preparations. SERFOR has also continued to carry out seizures in cities like Juliaca as recently as 2025. Illegal harvest for consumption and medicinal preparations is one of several pressures on these amphibians, which also face severe threats from water pollution.

Pathogens and Public Health Warnings

Consumption of these preparations is not recommended. The Wildlife Conservation Society (WCS) has identified at least 18 parasites and bacteria in Telmatobius frogs with potential human-health relevance. Peruvian wildlife authorities have repeatedly warned the public against consuming frog-based preparations because of potential health risks associated with parasites and bacteria found in these frogs.

The controversy surrounding jugo de rana is therefore less a clash between "ancient tradition" and conservation than a complex case where changing folk-medicine markets, unverified health claims, illegal wildlife trade, and species conservation now overlap.