What Are Possible Side Effects Of Venlafaxine? FDA officials say the potential for serious side effects from Singulair includes mental ... last week that the ... therapies should use Singulair, the agency said. Effexor has honestly given me my life back and brought me up from the depths of dark, chronic depression. Do not breast-feed while taking Effexor. All rights reserved. Singulair (montelukast) is a prescription medication used to treat asthma and seasonal allergies. Food aversions. I do have some dry mouth, but that really doesn't bother me...I figure it helps me to remember to drink plenty of water!Yeah it's common for anxiety to be worse to start with too. I'm on day 4 of Venlafaxine (37.5mg twice a day coupled with .25 Xanax) and yesterday and today I've been feeling kinda low. Truly the first 2 weeks are hell, then the hell starts to ease off in the next 2 weeks. I just came home from work early as I felt really teary and upset. Seeger Weiss’ websites and social media accounts are designed for general information only. For my first week, I feel much more peppy! This happened when I first started taking it. Anyone that doesn't have faith and is in the first two weeks, just push past it!! How are you doing?Day 9 now. Effexor (venlafaxine) can cause side effects such as decreased libido and increased blood pressure. Dizzy 5. I'd rather not add a sleeping aid to the mix. However, my appetite has returned with my good mood! I'm actually just going on Effexor again, have been on it in the past and am having similar start up effects again. Am really hoping this med works for me, and that the side effects do settle down as they are expected to. Is this common when people start effexor? It shows up on packaging inserts with a black box around it.In the case of Singulair, the agency said the warning advises against prescribing the drug for people with mild symptoms, especially for those with hay fever.The warning comes in response to “continued reports of neuropsychiatric events with montelukast, such as agitation, depression, sleeping problems, and suicidal thoughts and actions,” FDA officials said.The agency found those risks may outweigh the benefits for some people, particularly when other drugs or other therapies can be used instead.For those with hay fever, only people who haven’t responded to or can’t tolerate other therapies should use Singulair, the agency said.The FDA first included a warning on the drug in 2008.The boxed warning is a step that the Allergy and Asthma Network (AAN) has been pushing for.“AAN was the only national patient organization to advocate for this ‘black box’ warning,” Winders noted that figure accounts for fewer than 10 percent of the total number of people who’ve taken the medication, but “it is important to recognize the warning signs and talk with your doctor about alternative treatments.”For people with hay fever, Winders suggests that “allergen immunotherapy, avoidance and other prescription or over-the-counter medications also may help.”Other allergy drugs come with their own potential side effects.Second- and third-generation antihistamines such as Allegra, Claritin, and Zyrtec reportedly have less potential for side effects, although drowsiness and headaches can still occur.But none of the allergy medications likely have the potential mental health side effects of montelukast.Singulair works a bit differently than drugs such as antihistamines.It prevents inflammation, thus keeping airways open“This is the only medication in this class of drugs,” Winders said. Because of that I said I'd never go on any anti-depressant ever again and have tried to sort myself out since but have not managed and have been pushed here by family and friends really.Am suffering tremors in my face and body, headache, general nausea, chills, tiredness and feeling spaced out or zombieish, had diarrhoea earlier but haven't had it since. Nausea. I've noticed that alot of you are experiencing excessive tiredness.