Yes the Zyrtec does make me tired so I take it before bedtime. And I take the Pepcid three times a day. Very frankly, I’m not sure of the dosing. I’m just trying to soothe and save myself since 8 doctors later not one has helped. BUT you must clear things with your doctor since you are on those meds you mentioned. Can’t take any chances. But proud of you for being proactive! The pain was originally unbearable in legs, joints, and muscles. I have very little pain in legs now. Then diagnosed with bursitis in arms. The more I read the more I couldn’t accept that. So I YouTubed and tried exercises that addressed tendinitis that made more sense as a diagnosis. Arm has improved tremendously. I fight through the pain because I believe exercise is one of the biggest cures for long haul Covid plus the taming of the cytokines. And I am admitting that getting past the Covid fatigue is perhaps the worst of all the challenges. I start the day with a V8 diet Energy drink. Has just enough caffeine to kickstart movement. PS: I’m 75 and I’m not stopping. And I’m not even sure how long to take the Zyrtec and Pepcid…Maybe when I’m cured…lol