If you are used to taking your thyroid or allergy meds with your first cup of morning coffee, you may want to change that habit.
Several common medications have well-known or suspected interactions with coffee, which may alter their effectiveness or the absorption of the drug.
Levothyroxine helps balance hormones in people with hypothyroidism, and should not be taken with coffee. According to several studies, the absorption of thyroid medicine can decrease from 30 percent to 55 percent when taken with coffee.
The same is true with osteoporosis medication, which should be taken with water to maintain its effectiveness.
Some medications for depression and mood disorders also are not absorbed as well when taken with coffee. Drugs like fluvoxamine, amitriptyline, escitalopram, and imipramine appear to be metabolized differently when taken with coffee.
Don't combine coffee with medicines like felodipine (Amlodipine), since caffeine tends to block the positive effects of the drug, according to Medical News Today.
According to the American Diabetes Association, the caffeine found in coffee can make it harder to manage blood sugar. In the ADA study, caffeine was found to increase both glucose and insulin.