PURPOSE: A composition containing a plant extract for oral administration is provided to enable long-term storage of a formulation and to improve convenience. CONSTITUTION: A composition for oral administration contains a Trachelospermi caulis extract or a Trachelospermi caulis extract, silicon dioxide, and a pharmaceutically acceptable excipient. The extract is a dry extract or a soft extract. The excipient is microcrystalline or potassium silicate. The composition is a powder, granules, a hard capsule, or a tablet. A method for manufacturing the composition comprises: a step of preparing one or more extracts among the Trachelospermi caulis extract or a Trachelospermi caulis extract; a step of mixing the extract with silica dioxide and adding ethanol to prepare a mixture; and a step of drying the mixture and completely volatilizing ethanol.본 발명은 인습을 효과적으로 억제하는 특징을 가지는, 낙석등 또는 목단피 추출물 중 하나 이상의 추출물, 이산화규소 및 약제학적으로허용가능한 부형제를 포함하는 경구 투여용 조성물에 관한 것이다. 또한, 본 발명은 상기 경구 투여용 조성물을 제조하는 방법에 관한 것이다.