Loratadine 20 Mg Per Day Best5MgRx offers great customer service with the best no prescription prices in Internet. loratadine 20mg per day Best5MgRx online can lower your RX costs by 70%. Personalized insights from top U.S. Doctors: The full adult dose of loratadine in other parts of the world is 20 mg. Personalized insights from top U.S. Doctors: The full adult dose of loratadine in other parts of the world is 20 mg. People who take more than the recommended 10 mg of loratadine a day are at greater risk of severe sleepiness, racing heartbeat, and headaches. The dose for Claritin is one 10mg tablet per day and this med should not be taken by folks with liver or kidney problems unless under the advice of a doctor. Some indications, such as allergic asthma allow dose ranges from 10-20mg once per day has been used for up to 8 weeks. Doctors help recognize, prevent, and treat your allergies: The full adult dose of loratadine in other parts of the world is 20 mg. Loratadine's peak effect occurs after 1-2 hours, and its biological half life is on average 8 hours (range 3 to 20 hours) with desloratadine's half-life being 27 hours (range 9 to 92 hours), accounting for its long-lasting effect. Loratadine is usually taken once per day. Follow your doctor's instructions. Follow your doctor's instructions. Do not crush, chew, or break the regular tablet. One loratadine never helped. I started taking two and I am no longer congested during sleep and don't have the allergy issues throughout the following day. Two 10mg tabs make a really big difference for me.