“I had a really bad sinus infection and was put onto this drug My doctor also gave me other tablets with these. My pharmacist called it a “ rescue package”. “Was prescribed this after amoxicillin did not do the trick for nasty sinus infection. This is Day 4 and my coughing spasms remain the same. “I cannot in good conscience recommend this drug. “After reading reviews, I was pretty apprehensive about taking Clarithromycin. This medication dose is too strong for me. I have taken so many antibiotics in my life but these have definitely been the hardest to cope with, especially with how huge these pills are. Keep taking the medicine, but tell your doctor if these side effects bother you or don't go away:Serious side effects are rare and happen in less than 1 in 1,000 people.In rare cases, it's possible to have a serious allergic reaction You could be having a serious allergic reaction and may need immediate treatment in hospital.These aren't all the side effects of clarithromycin. I’ve had a cough for 11 months & all other tests by other specialists were normal. I hope this gives some reassurance to someone else that its perfectly possible to take it and have no side effects!” “On day three of the clarithromycin 500mg XL for sinusitis and I don’t see even the slightest difference. never again! No appetite. For more information about how clarithromycin can affect you and your baby during pregnancy, There are some medicines that don't mix well with clarithromycin.There are no known problems with taking herbal remedies or supplements alongside clarithromycin.For safety, tell your doctor or pharmacist if you're taking any other medicines, including herbal remedies and supplements.Clarithromycin is from a group of medicines called macrolide antibiotics. Since then, no GI problems, no anxiety / restlessness and no horrible taste in my mouth. I had pain above my eye and maxillary sinuses. I'm more tired and exhausted easily since being on this drug and nauseous. I’m supposed to take it for 5 days & if I don’t feel 50% better, I’m supposed to stop it & call doctor. I will be avoiding this antibiotic at all costs in the future, and just really hope that the metallic taste/dry mouth rights itself over time - although I don't feel hopeful after a month.” I also have that foul metal taste and it certainly wakes you at night. Select one or more newsletters to continue. I'm on them for two weeks with severe sinusitis!! While these reviews might be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare practitioners.Compare all 173 medications used in the treatment of I was horribly sick to the extent that I couldn’t even get out of bed. I also had the nightmares that other patients have mentioned, and am shocked that this seems to be another side effect. I guess your experience depends on how sick and miserable you feel. Unable to eat food . I will now be telling my doctors that I do not get along with Biaxin.” “I have a cough about six weeks, also with a sinus infection. Now on clarithromycin and deltacortril and nasal spray. I will make sure to never take this medication again, it really is the worst I have EVER been on! If you stop your treatment early, your infection could come back.Clarithromycin tablets come in 250mg or 500mg strengths. and some diarrheoa but since I also suffer from IBS, this in a strange way helps.” Metal taste. I have a two week course and am feeling really hopeful for the first time in 3 weeks that I'm not going to spend the forseeable future feeling absolutely awful. These tablets release the medicine slowly, which means that 1 dose a day is enough.Try to take your medicine at the same time every day.Carry on taking this medicine until the course is completed, even if you feel better.