Melatonin interacts with many drugs, potentially increasing drowsiness with CNS depressants (benzodiazepines, opioids), increasing bleeding risk with blood thinners (warfarin, NSAIDs), affecting blood pressure with antihypertensives, altering blood sugar with diabetes meds, reducing seizure med effectiveness, and interfering with immunosuppressants. Key interactions include fluvoxamine (increases levels), birth control (more sedation), caffeine (opposite effect), antidepressants, and antibiotics like ciprofloxacin. Always consult your doctor before combining melatonin with other medications.
It has been reported that losartan, an angiotensin II receptor blocker, alters the circadian rhythm of melatonin secretion and significantly reduces melatonin production.
The risk or severity of CNS depression can be increased when Amitriptyline is combined with Melatonin. The risk or severity of CNS depression can be increased when Melatonin is combined with Amitriptylinoxide. The therapeutic efficacy of Amlodipine can be decreased when used in combination with Melatonin.
Propranolol caused a dose-dependent decrease in melatonin levels in both the dark and the light.
Cautions with other medicines
The use of melatonin with antidepressant drugs may potentially increase your risk of some side effects, including sedation. As such, it's important that you talk to your healthcare provider before you use these medications together.
To make sure it's safe for you, tell your doctor or pharmacist before taking it if you:
Taking melatonin with antidepressants could increase your risk of side effects like sleepiness and even reduce the effects of some antidepressant medications. In an animal study, when melatonin was taken along with antidepressants, such as desipramine and Prozac (fluoxetine), it reduced their effectiveness.
While it's usually fine to take both supplements in the same evening, you'll want to take magnesium an hour or two before you're ready to go to bed, followed by melatonin about 30 minutes before you'd like to fall asleep.
Melatonin did not alter BP reactivity in healthy normotensive men and women. However, melatonin did decrease nighttime peripheral and central systolic BP, suggesting it may be beneficial in lowering BP even in those with a normal BP.
In addition to reducing your dosage of Zoloft, you may also want to try taking a melatonin supplement. You can purchase melatonin over the counter, and it's relatively inexpensive. Melatonin is not addictive or habit-forming like other sleep aids, although its long-term use has yet to be studied in humans.
Why can't you eat eggs with doxycycline? You should avoid eating eggs with doxycycline because they contain iron, which can interfere with doxycycline absorption. This could reduce the medication's effectiveness, so it's best to consume these foods at different times.
Melatonin Interactions With Blood Pressure Medications
Adalat, Cardiazem, Isoptin, Plendil, and more (calcium channel blockers): This class of drugs is often used to treat high blood pressure, angina (chest pain), and certain arrhythmias, states Dr.
A guide to sleep aids: your options
The drugs metoprolol (Lopressor) and propranolol (Inderal XL) can cross the blood-brain barrier into the brain, reducing sleep quality and causing you to wake up more often after you fall asleep. These beta-blockers are linked to nightmares, insomnia and daytime sleepiness.
Use melatonin cautiously if you take drugs such as diazepam (Valium, Valtoco, others) and others that are affected by these enzymes. Fluvoxamine (Luvox). This medication used to treat obsessive-compulsive disorder can increase melatonin levels, causing unwanted excessive drowsiness. Immunosuppressants.
Agomelatine is in a unique pharmacological class. Explicitly, unlike other available antidepressants, agomelatine is a melatonin agonist (i.e., MT1 and MT2 receptor-site agonism) and a 5HT2c antagonist. The melatonergic effect is purported to resynchronize circadian rhythms.
Doctors often don't prescribe melatonin because strong evidence for its long-term effectiveness and safety is limited, especially for general insomnia, with behavioral therapies like CBT-I preferred as initial treatments, plus concerns exist about unregulated supplement quality (incorrect dosages, contaminants) and unknown long-term effects, particularly in children, where behavioral approaches are usually better. While approved in specific cases (like for children with autism), it's generally a short-term option, not a first-line fix for most adults or kids.
DALLAS, Nov. 3, 2025 — Long-term use of melatonin supplements, often used to promote sleep and address insomnia, was associated with a higher risk of heart failure diagnosis, heart failure hospitalization and death from any cause in chronic insomnia, according to a preliminary study to be presented at the American ...
Melatonin is a hormone that regulates our sleep-wake cycle. Milk, nuts, cherries, fish, rice, goji berries, and oats contain melatonin. Avoid spicy food, chocolate, tomatoes, pizza, and citrus fruits before bed. Your daily diet and sleep hygiene are key to improving sleep.
Melatonin is a naturally occurring hormone that tells us when it's time to sleep and wake up, but some people don't produce enough of it, Dr. Madrak explains. “It's often used for insomnia, but can also help reduce negative feelings associated with anxiety (that keep us awake at night).”
New research suggests that in some cases, patients with major depressive disorder whose symptoms include both insomnia and suicidal ideation (thinking about suicide) may benefit by regularly taking a prescription sleep medication, such as Ambien, when they begin treatment with an SSRI antidepressant such as Prozac or ...
It may also be dangerous to consume alcohol with certain medications used for depression and anxiety. For example, taking certain anti-anxiety medications (such as benzodiazepines) or pain medications (like opioids/opiates) with alcohol, can slow down breathing significantly.