Introduction: Both angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers were found to reduce plasma levels of proinflammatory cytokines. No previous study has compared their effect on the production of anti-inflammatory cytokines. Material and methods: The study enrolled 52 patients with grade 1 and grade 2 arterial hypertension. The participants were divided into two groups treated with either perindopril (4 mg daily) or telmisartan (40 mg daily). Blood pressure, plasma lipids, glucose homeostasis markers, as well as plasma levels of uric acid, interleukins 4, 10, 13 (IL-4, IL-10, IL-13), and high sensitivity C-reactive protein (hsCRP) were measured at the beginning of the study and six weeks later. Results: Both perindopril and telmisartan reduced systolic (SBP) and diastolic blood pressure (DBP). Although both agents increased serum levels of IL-10, this effect was more pronounced in patients treated with telmisartan. Neither telmisartan nor perindopril affected circulating levels of uric acid, glucose, total cholesterol, LDL cholesterol, HDL cholesterol, triglycerides, IL-4, IL-13, and hsCRP. The effect of telmisartan on IL-10 slightly correlated with an improvement in insulin sensitivity. Treatment-induced changes in IL-10 did not correlate with hypotensive properties of perindopril and telmisartan. Conclusions: The obtained results indicate that angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers administered for a short period of time produce a relatively week effect on anti-inflammatory cytokines, limited to IL-10, and stronger for telmisartan than for perindopril.