No. Benadryl (diphenhydramine) capsules aren't breakable, I am not sure if tablet forms are scored, if half the dose is needed, the liquid form can be used instead. I break the pink Benadryl tablets in half and just take half when during the day because it can make you drowsy. Works good though. Claritin shouldn't make you drowsy, I don't think. The combo of bloody nose and headache is from the pressure in the sinuses from inflamation from allergy or cold/infection or both. You can treat the symptoms as I mentioned with OTC meds, but I'd suggest your. Your wife is right - cutting the benadryl in half is just reducing the dosage. For example, If the tab was originally 250mg halving it just means she's only getting 125. For example, If the tab was originally 250mg halving it just means she's only getting 125. Adult dose of diphenhydramine is 25-50mg (so 1-2 25mg tabs) every 4-6 hours. You should take no more than 6 doses per 24 hours. So yes, you can take 11/2 tabs or you can increase to two tabs if you want. It seems that Benadryl is the only thing that works for either of us. Since he does a lot of driving in connection with his work, he bought the little pink Benadryl tablets and broke them in half. Since he does a lot of driving in connection with his work, he bought the little pink Benadryl tablets and broke them in half. Benadryl (diphenhydramine) is a medication from the antihistamine class of drugs. This means that it lowers the levels of histamine in the brain and throughout the body. To determine how long Benadryl stays in your system, it is necessary to consider the elimination half-life of its active ingredient “diphenhydramine.” The elimination half-life of diphenhydramine has been reported to range from 2.4 to 9.3 hours in healthy adults. I bought Benadryl (diphenhydramine) capsules instead of pills. Is there a way to take half a capsule safely? I on Is there a way to take half a capsule safely? I on more I bought Benadryl (diphenhydramine) capsules instead of pills.