Both atenolol and losartan can cause fatigue as a side effect. Additionally, when these two drugs are used together, there is a potential for a drug interaction. Atenolol is a beta-blocker, which can increase the blood levels of losartan. This may lead to an increased risk of side effects such as low blood pressure, dizziness, and tiredness. It is important to monitor for any signs of these side effects and to consult with a healthcare provider if they occur.
