The 2025 Clinical Guideline from the American College of Physicians (ACP) and the 2012 American Academy of Neurology (AAN)/American Headache Society (AHS) Guideline on Pharmacologic Treatment for Episodic Migraine Prevention in Adults both support the use of metoprolol and propranolol for migraine prevention. The ACP guideline recommends either metoprolol or propranolol as first-line beta-blocker options for preventive therapy in nonpregnant adults with episodic migraine and places them among the preferred oral agents to be considered before CGRP-targeted therapies, citing considerations related to cost and patient preference for oral treatments. Similarly, the AAN/AHS guideline concluded that both metoprolol and propranolol are established as effective for migraine prevention (Level A recommendation) and should be offered to reduce migraine attack frequency and severity. While the AAN/AHS guideline reviewed evidence supporting the efficacy of each agent individually, it did not identify direct comparative evidence demonstrating superiority of metoprolol over propranolol or vice versa. [1], [2]
A 2019 systematic review and meta-analysis examined the efficacy of beta-blockers for migraine and tension-type headache prevention in adults. The selection criteria focused on studies comparing beta-blockers with placebo or other interventions for headache prevention, particularly migraine and tension-type headaches. Out of 3,513 initial studies screened, 108 trials met the inclusion criteria, with 50 being placebo-controlled and 58 comparing beta-blockers with other interventions. The analysis highlighted the effectiveness of propranolol, showing a significant reduction in migraine frequency compared to placebo, with results indicating fewer headaches per month. Specifically, propranolol reduced episodic migraine frequency by approximately 1.5 headaches per month at 8 weeks and 1.2 headaches per month at 12 weeks compared with placebo, with both outcomes supported by high-quality evidence. Propranolol also increased the likelihood of achieving at least a 50% reduction in headache frequency and was associated with reductions in analgesic medication use, headache severity, headache duration, and headache index. Additionally, propranolol demonstrated efficacy comparable to other established migraine preventive therapies, including flunarizine, topiramate, and valproate, although comparative-effectiveness data were generally limited by small, underpowered studies. [3]
Metoprolol was also more effective than placebo for episodic migraine prevention, demonstrating a reduction in headache frequency at 8 weeks, with the evidence rated as moderate quality. Metoprolol additionally increased the likelihood of achieving at least a 50% reduction in headache frequency and was associated with reductions in analgesic medication use, headache severity, headache duration, and headache index. Furthermore, network meta-analysis did not identify significant differences in efficacy between propranolol, metoprolol, and other evaluated beta-blockers, suggesting that the benefit observed in migraine prevention may represent a class effect. In contrast, other beta-blockers like atenolol, bisoprolol, and timolol demonstrated some efficacy, though the evidence was generally weaker due to fewer and smaller studies. Adverse events associated with beta-blockers included increased incidence of dizziness and fatigue. Despite these side effects, withdrawal rates did not significantly differ from those observed in placebo groups, suggesting a favorable benefit-risk profile for beta-blocker therapy in migraine prophylaxis. [3]