Hi Dr V, I am at a crossroad of considering to go back on Plaquenil . A year ago I proposed to go off Plaquenil after being on it for 22 years. Does plaquenil interact with gerd Plaquenil dry throat and nsoe The mean time to peak plasma concentration was 1.83 hours. The mean plasma elimination half-life varied, depending on the post-administration period, as follows 5.9 hours at C max-10 hours, 26.1 hours at 10-48 hours and 299 hours at 48-504 hours. The parent compound and metabolites are widely distributed in the body and elimination is. It is now 6 weeks later, I've titrated up to 600mg. per day, and I am SEVERELY depressed, to the point I can't get out of bed some days. I am sicker mentally than I have been for 16 years, and it didn't start until I started the plaquenil. I'm so anxious, I'm agoraphobic and having anger attacks. I have never been agoraphobic in my life. Find patient medical information for Plaquenil Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. If I had joint or muscle aches, I took care of it by resting, Aleve and ice. At my recent eye exam the doctor mentioned I had reached the plaquenil toxicity level and that my retina cells could die (which do not regenerate! My proposal was based on the fact that I had not had any major inflamation that completely shut me down or keep me from being active. What is the half life of plaquenil Plaquenil Concordia Pharmaceuticals Inc. FDA Package Insert, PLAQUENIL Side Effects, Reviews by Patients - Plaquenil and erosive osteoarthritisHydroxychloroquine bone marrow suppressionPlaquenil and zithromax for lyme The 1-2 months is correct. It’s about 45 days before it starts to go out of your system. Remember it is cumulative, and took time to build up for an effect when you started taking it. It has an enormous half life. That’s why I laugh when some people’s surgeons tell them stop taking it 2 weeks before surgery. It does nothing. Stopping Plaquenil - General Discussion - Life With Lupus. Plaquenil Oral Uses, Side Effects, Interactions, Pictures, Warnings.. Hydroxychloroquine - Wikipedia. With a half-life of 537 hours 22.4 days. In the same study, the plasma peak concentration was. 50.3 ng/mL reached in 3.74 hours with a half-life of 2963 hours 123.5 days. Urine hydroxychloroquine levels were still detectable after 3 months with approximately 10% of the dose excreted as the parent drug. I wonder if what you're noticing is really the change in dose. I say this because Plaquenil has a chemical half-life of 30-60 days you can confirm this on wiki or RX info on the drug--so it takes a LONG time to get out of your system.long for you to notice changes in days. The absorption half-life was approximately 3 to 4 hours and the terminal half-life ranged from 40 to 50 days. The long half-life can be attributed to extensive tissue uptake rather than through decreased excretion. Peak plasma levels of hydroxychloroquine were seen in about 3 to 4 hours.