Doxycycline is a semi-synthetic antibiotic of a broad spectrum of tetracyclines. Causes bacteriostatic action by suppressing protein synthesis of pathogens as a result of blocking the aminoacyl transport RNA (tRNA) with the "information RNA (rRNA) complex" ribosome.

Lisinopril is an antihypertensive, vasodilating, cardioprotective drug, an ACE inhibitor that is used to treat hypertension, heart failure, acute myocardial infarction, diabetic nephropathy.

A peripheral vasodilator, blocks postsynaptic alpha1-adrenergic receptors and prevents the vasoconstrictive influence of catecholamines. It reduces pressure in the pulmonary veins and the right atrium significantly, it also reduces pulmonary vascular resistance moderately. The drug therapeutic indications include: arterial hypertension; CHF (in combination therapy), Raynaud's syndrome and disease, pheochromocytoma, peripheral vascular spasm on the background of poisoning with ergot alkaloids. Prostatic hyperplasia