Common Sleepiness.

Expert advice for Diligan Tablet
Diligan can increase the effects of other CNS depressants (alcohol, barbiturates) medicine. If you are using Diligan for motion sickness, it should be taken an hour before your travel. Avoid consuming alcohol when taking the Diligan, as it may cause excessive sleepiness or drowsiness.

Q. Is Diligan a narcotic, addictive, antibiotic, or anticholinergic drug?
Diligan is not a narcotic, addictive, or antibiotic drug. It is an antihistaminic drug with less anticholinergic activity

Q. Is Diligan available over the counter (OTC)?
No, Diligan is not available without a prescription

Q. Can I take Diligan for nausea, hangover, anxiety, hives, vertigo; morning and motion sickness?
Diligan cannot used to treat hangover, anxiety, hives or morning sickness. It is used to treat vertigo and motion sickness; symptoms include urge to vomit (nausea), vomiting, and dizziness. Please consult your doctor for your medical condition before taking the drug

Q. Can I take Diligan with Xanax (alprazolam), Zyrtec (cetirizine), Allegra (fexofenadine), Percocet (acetaminophen and oxycodone), or Zofran (ondansetron)?
Diligan can be taken with Zofran. Its use should be avoided when you are already taking Allegra, Percocet, Xanax, or Zyrtec

Q. Can I take meclizine with amoxicillin, tramadol, lorazepam, phentermine, or ibuprofen?
Meclizine may show drug interaction with tramadol. It is not reported to interact with amoxicillin, lorazepam, phentermine, or ibuprofen. Please follow the advice of the doctor regarding their simultaneous use

Q. Does Diligan cause sleepiness, constipation, weight gain, and raise blood sugar or blood pressure?
Diligan may cause sleepiness and constipation, but it is not known to cause weight gain and raise blood sugar or blood pressure. Please consult your doctor before taking the drug

Q. Is Diligan safe?
Diligan is relatively safe if used at prescribed doses for the prescribed duration as advised by your doctor.