I am taking meloxicam. Can I take alka-sektzer plus cold and flu also while I am on this medication?

Avoid mixing manyMed. There has to be a good reason for adding any pills or taking each one of the pills. if your condition is a head cold, then you do not need to mix more than Tylenol (acetaminophen) / or Cold/Flu meds and or a decongestant . Alka- seltzer is not a safe medication to mix with Meloxican.
Medication. You are on Meloxicam it is an NSAId and the Almka seltzer has Aspirin. These have similar side effects on stomach and platelets. This could be concerning ,but for a dose or two unlikely problem.