Crimson - No, no drowsiness, or rather, no additional drowsiness that could not be attributed to alcohol. I am also alternating between the zantac/claritine combo and pepcid. I hope that will avert any resistance to either, and it just feels safer not overloading your body with too much of one drug.
Bchin - you sound like a homozygote. (no I am not calling names). Basically, you have a double defective allele in your genes. Some of the flushers here have one good and one bad allele. I am like you. Typically, studies show that we experience 18x the level of acetaldehyde as "normal" people. Heterozygotes (1 good, 1 bad allele), only experience 5 x the acetaldehyde. I find the Zantac Claritine combo works for me very well. So there is hope, even for homozygotes. But pls remember, that the bad stuff acetaldehyde could still be coursing through your veins doing all sorts of damage even though you don't turn red. We need more research in that area.
Crimson is correct about Claritin/Clarintine/Clarityne etc... its sold under diff names in diff countries as well. The ingredient you would look for is Loratadine.
As for the dosage, please look at the pending patent that I posted about on 10 Oct 06. The researchers used and suggested 150mg of Ranitidine (zantac) and 10mg of Loratidine (Clarityne) I think. However, they did suggest a possibility of higher dosages, but THEY HAVE NOT TESTED THAT. So I would not encourage it.
Timing - the researchers in the said pending patent suggests 30 mins before drinking. apparently the effects last 3 hours. To be safe, I take it about 40 mins before drinking and it works fine. I haven't really taken the time to notice if it works better on an empty or fulll stomach... may look into this.
B Vitamins, Vitamin C, Cysteine (slow release) - Ok, here's something else I would like to bring up. I know there is another thread on this, but I just thought I'd share with you that these are other supplements that I take in conjunction with the H1/H2 inhibitors. These supplements have negligible effect on the flush. However, I take these to somewhat protect against the effects of acetaldehyde. Now, the studies are vague and not conclusive. Cysteine for example can "clear out" acetaldehyde in a test tube, but we don't know how well it works in the blood system. Anyway, it is certainly speculative, but I am hoping that these supplements help protect at least to some degree, my body against acetaldehyde. Experiments on rats have shown some protective effect. Please note that many supplements have shown to help lower blood acetaldehyde levels (like Taurine), but often, they only work on people who are not carrying the defective gene. Again, (nag nag nag), please be very aware of the danger of the highly toxic carcinogen, acetaldehyde, that we expose our bodies too each time we drink.