Based on 7 first-hand reports and 45 meta-analyses & systematic reviews in the medical literature. Ranked #857 of 1,974 overall.
Of reports that state an outcome, 40% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: oral minoxidil, finasteride, dutasteride), and procedural (e.g. platelet-rich plasma, fractionated lasers, hair transplantation) treatments successfully promote hair growth, highlighting the superiority of a multifaceted and individualized approach to management.
PubMed 38852607 ↗Conclusion: Acupuncture may have an advantage over no intervention and sham acupuncture in improving nasal symptoms and quality of life for adults with AR. The effect of acupuncture and cetirizine or loratadine for AR may be similar. Additional trials are necessary to confirm these results.
PubMed 35462555 ↗Conclusion: The addition of corticosteroids to an antihistamine as treatment for AU needs to be further investigated. Well-designed, high-quality interventional trials are needed to establish evidence-based treatment guidelines for AU.
PubMed 38420865 ↗Conclusion: In summary, this meta-analysis demonstrated the efficacy of montelukast combined with levocetirizine in the treatment of nasal symptoms in AR with asthma, indicating that the combination of montelukast with levocetirizine is more effective in improving symptoms of allergic rhinitis than monotherapy and has good safety.
PubMed 39394937 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“Yes they go away temporary with antihistamines.. i take cetrizine which works for a day.”
“I've tried taking 10mg cyterezine, when I had symptoms. I didn't get 100% relief, but maybe it eased out symptoms.”
“I went from being a B and C student, to a straight A student in all honors classes, without even trying.”
“1x 20mg Cetirizine”
“Cetirizine Hydrochloride/ZIRTEK... I get this no-nonsense attitude and feeling of focused... the next morning i'm feeling slightly groggy”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate