>>11424897>>11424867Not really. IIRC diphenhydramine acts primarily histamine and muscarnic acetylcholine receptors. The only real way you could counteract the drowsiness would be to consume another drug that has inverse effects on the same receptors, but that would also nullify the desired effects of your cough medicine. You can of course consume something that acts on a completely different receptor system like caffeine, but that wont suppress the effects of the DPH, it'll just add the effects of caffeine on top of the effects of DPH - which in practical terms means not much is gonna happen, although you're likely to experience some muscular discomfort and restlessness.
