Introduction. Lately there has been an increasing demand for natural products containing vitamins. These include the Blue honeysuckle Lonicera caerulea . This plant species is native to the cold temperate climates of the northern hemisphere. Breeders have obtained Blue honeysuckle cultivars with plastic potential to adapt to environmental factors, which have been acclimatised to the climatic conditions of the Republic of Moldova. Five cultivars of Blue honeysuckle (Nimfa, Sinicsa, Leningradskii velican, Blue velvet, Carina) were propagated in vitro, plant collections were created in Alexandru Ciubotaru NBG and in their fruits were determined the ascorbic acid content. Purpose of the work. Dosage of ascorbic acid in fruits of some cultivars of Blue honeysuckle L. caerulea. Material and methods. The fruits of 5 cultivars of Blue honeysuckle (Nimfa, Sinicsa, Leningradskii velican, Blue velvet, Carina), multiplied in vitro, from the plant collection of Alexandru Ciubotaru NBG were used as material. Ascorbic acid determination was carried out by the titrimetric method [1]. Results. Analysis of the obtained data of ascorbic acid dosage shows that the content expressed in mg/100g of plant product varies between 256.2 and 465.8. Fruits of Carina and Lemingradsckii velican cultivars are characterized by the highest values of ascorbic acid (465.8 and 434.8), while Sinicsa and Blue velvet cultivars have the same content - 264.0, followed by Nimfa with the lowest content - 256.2. The last 3 cultivars have almost half the ascorbic acid content compared to the cultivars Carina and Lemingradsckii velican. Note that the values of ascorbic acid content in fruits of the analyzed cultivars are almost similar to those of plants grown in other geographical regions [2]. Conclusions. The obtained data demonstrate that the plants of 5 cultivars analyzed of Blue honeysuckle can serve sources of rich fruits in ascorbic acid as an alternative to traditional plant species (Rosa canina L., Hippophae rhamnoides L., Ribes nigrum L., Rubus idaeus L.) in the Republic of Moldova.