Medical Disclaimer: This site provides informational comparisons only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or pharmacist before making medication decisions.
Compare Levocetirizine (Xyzal) and MONTELUKAST (Montelukast) — clinical data, side effects, and patient experiences.
Xyzal · Antihistamine
How it works
Active R-enantiomer of cetirizine. Potent third-generation H1 antihistamine with minimal sedation.
Approved for
Montelukast, Singulair · Leukotriene Modifier
How it works
12.1 Mechanism of Action The cysteinyl leukotrienes (LTC 4 , LTD 4 , LTE 4 ) are products of arachidonic acid metabolism and are released from various cells, including mast cells a...
Approved for
Estimated frequency (%) based on clinical trial data
No specific warnings
Based on 23 Reddit discussions
Levocetirizine
50%
positive
8 threads
MONTELUKAST
13%
positive
15 threads
% of discussions mentioning each side effect
8 Reddit threads analysed for Levocetirizine
Overall Sentiment
Slightly positive
Comparison Threads
0
Avg Post Score
580 upvotes
Most discussed side effects in community
**I am not OOP. OOP is** . He posted in r/AmItheAsshole and r/relationship_advice Your fun fact to cover up spoilers: u/cookiesandkush requested otters. Sea otters can eat up to 25% of their body weight a day. They also can hold their breath for over 5 minutes at a time! If you need eye bleach today
[See this post in CFS to read the graphics.](https://www.reddit.com/r/cfs/s/629oPgy9IQ) Mast Cell Activation Syndrome (MCAS) is the most common form of systemic Mast Cell Disease and is known to cause Dysautonomia in some but not all patients. Histamine, serotonin, and dopamine are all neurotransmi
Mast Cell Activation Syndrome (MCAS) is the most common form of systemic Mast Cell Disease and is known to cause Dysautonomia in some but not all patients. Histamine, serotonin, and dopamine are all neurotransmitters that play a role in regulating sleep-wake cycles and helping the brain transition f
https://www.fda.gov/safety/medical-product-safety-information/cetirizine-or-levocetirizine-drug-safety-communication-fda-warns-about-risk-severe-itching-after Not sure if this was posted already, but wanted to share this in case it hasn't been. The FDA warns that long-term use of cetirizine and levo
Hi guys, I 40 M wanted to share a life changing experience. I drank way too much beer almost every day over the summer. And before that too, but the summer was brutal. However, I've been sober since the beginning of November. The first 10 days were not fun. After two weeks it got a lot better. I suf
All generic Xyzal is on backorder through our wholesaler and we were completely out today. A patient arrived to pick up their prescriptions—one of which was Xyzal #30. We of course weren't able to fill it so I left the counter to grab some OTC brand-name Xyzal after the patient said that they were f
for some of us, LC is going to be a lifelong condition. i've seen lots of posts recently from folks for whom this realization (or at least deduction) fills them with despair. i understand 100%. i am likely in that same boat - i.e., i'll almost certain never be cured, and the rest of my life will req
Background: I suffer from many allergies, dust mites, dander, ( I live 3 cats, not by choice), pollen, sesame, all 'nuts', shellfish, kiwi. When I sought help from my doctor in return I received a halfhearted response "Take a 24hr OTC antihistamine". I feel lost on which antihistamine to use, runny
Community discussions are sourced from public Reddit threads. Content reflects individual opinions and is not medical advice.
15 Reddit threads analysed for MONTELUKAST
Overall Sentiment
Mixed
Comparison Threads
0
Avg Post Score
93 upvotes
Most discussed side effects in community
Is that a Singulairity?
16M Caucasian, I weigh around 260 , I’m 5’11. I take cetrizine, nasal spray, and montelukast. I have allergies, anxiety, and OCD. As the title says, saying some words makes my vision go weird. Everything will tilt downward. Until I stop pronouncing the word. Words like B, D, M, U, V, and Z are on
28 year old Male, 170 pounds. I had 3 sleep studies done . 2 at home, 1 in the clinic. 2 showed no apnea. And 1 was minor, like so minor he didn't even wanna give me a cpap but did anyway. I don't know what to do anymore. I wake up 5-8 times a night. Usually I do need to pee. Went to a urologist, go
My husband is a 35 year old, 220 pounds, Caucasian male. When ai met him 7 years ago he was in amazing health. We would go for hikes for 10 miles and he would work out every day. He could eat anything and didn't have a single allergy. He would get exercise induced asthma if he did something really i
Age: 35 Sex: F Height: 5'6 Weight: 230 Duration: 1 and a half to 2 years. Occasionally drink/edible gummy consumption (once or twice a month) Country: USA City/State: Austin, TX Hi everyone! I hope all is well. Posting on behalf of my sick GF. My GF has been chronically ill with flu-like symptoms fo
32F. Currently 38w pregnant. Scheduled c section next Saturday. I’m currently on prednisone, Wellbutrin, valacyclovir, Focalin, and albuterol for my asthma + montelukast when it gets really bad during the winter. For context, I’ve had asthma since I was a kid. It’s landed me in the hospital plenty
34 White male, 5'10", 195, symptoms experienced since Memorial Day 2013, skin, lungs, chest, Ranitidine, Doxepin, Nexium, Montelukast, Xolair I was going to a dermatologist for plantars warts on my feet. He was freezing them off. After 3 years with moderate success, he asked me if I wanted to try hi
20 AFAB, My adoptive parents have always told me about how crazy bringing me home from the hosptial was because they didnt think i was going to be able to leave for at least 4 weeks initially. I was born 6 weeks early. The reasoning that my parents have always told me (as well as many other relativ
Community discussions are sourced from public Reddit threads. Content reflects individual opinions and is not medical advice.
Levocetirizine is a Antihistamine, while MONTELUKAST belongs to the Leukotriene Modifier class. This means they work through different pharmacological mechanisms, which may influence both efficacy and side effect profiles.
MONTELUKAST carries 4 FDA warnings. Patients should discuss all warnings and contraindications with their healthcare provider before starting or switching medications..
This comparison is for informational purposes only. Always consult a qualified healthcare professional before making medication decisions.