Drug Interaction

James · Mar 14, 2017

March & April I'm shut down with allergies here in Phoenix. Come May, I'm fine again. Just ordered some labs form DiscountedLabs.com (TT, FT, SHBG, E2, CBC, Lipid Panel, T4, TSH & Vitamin D). I take Claritin D daily (Loatadine 10 mg & pseudoephedrine 240 mg). What are your guys thoughts on if Claritin will interfere with my labs. Thanks guys.

CoastWatcher · Mar 14, 2017

James said:
March & April I'm shut down with allergies here in Phoenix. Come May, I'm fine again. Just ordered some labs form DiscountedLabs.com (TT, FT, SHBG, E2, CBC, Lipid Panel, T4, TSH & Vitamin D). I take Claritin D daily (Loatadine 10 mg & pseudoephedrine 240 mg). What are your guys thoughts on if Claritin will interfere with my labs. Thanks guys.

Pseudoepherdine, I beleive, always results in a thyroid warning - as do many decongestants/antihistamines. Would it impact your labs? I don't know. I do know it has a short half-life of 5-8 hours. I'd discontinue prior to testing (but I am very conservative in regard to testing).

Vince Carter · Mar 14, 2017

I take L-Histidine and I got off all the antihistamines...flonase/claritin/pseaudoephedrine/Zaditor (eye drop)...most of those I was living on tripled up, but i added that Histidine @ 1/4tsp 2xd and got off all that crud.