Claritin (loratadine) is a second-generation antihistamine which are generally considered to be safe if you have glaucoma.
Can I take Claritin (loratadine) if I have glaucoma?
Claritin (loratadine) is considered a safe antihistamine to take if you have been diagnosed with glaucoma. There are certain antihistamines that should be avoided, however.
First-generation antihistamines may increase the risk of precipitating an acute attack of glaucoma.
Only certain antihistamines are recommended to be used if you have been diagnosed with glaucoma.
Older, first-generation antihistamines tend to have stronger anticholinergic effects and should be avoided in those with glaucoma, especially in those specifically diagnosed with closed-angle glaucoma.
First-generation antihistamines include:
As a general recommendation, an antihistamine with less anticholinergic effects should be substituted for first-generation antihistamines if you are diagnosed with glaucoma. First-generation antihistamines can increase intraocular pressure, increasing the risk of an acute attack of glaucoma.
Other adverse ocular effects that could result from the use of first-generation antihistamines include dry eyes and blurred vision. Elderly individuals may be particularly susceptible to the anticholinergic effects of first-generation antihistamines.
Second-generation antihistamines have far less anticholinergic effects than first-generation antihistamines and are generally considered compatible in those diagnosed with glaucoma.
Second-generation antihistamines include:
Out of the second-generation antihistamines, Claritin and Allegra are thought to have the least anticholinergic effects. They are safe for most individuals diagnosed with glaucoma.
Nevertheless, it's never a bad idea to talk with your doctor regarding over the counter medications you are looking at taking and which would be safe to use in your particular medical situation.