Melatonin is secreted by a small gland located at the base of the brain called the pineal gland, where it is produced by a conversion from serotonin. Serotonin itself is created by the conversion from the amino acid tryptophan, which is often deficient in the diet.

The primary stress hormone, cortisol also inhibits melatonin production and absorption, leading to restless sleep and insomnia. 

There are few other supplements that are as consistently effective at supporting healthy, deep sleep as melatonin.

In fact, Melatonin is an integral part in the body’s natural sleep cycle called the circadian rhythm, which controls not only the wake and sleep cycle, but other physiological functions such as blood pressure, digestion and brain-wave states as well.

Shipment processing time

All orders are processed within 2-3 business days , please be mindful we are located in Puerto Rico and delivery delays can occasionally occur. We try our hardest to avoid that inconvenience.

If we are experiencing a high volume of orders, shipments may be delayed by a few days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.

Shipping rates & delivery estimates

Shipping charges for your order will be calculated and displayed at checkout.

Shipment confirmation & Order tracking

You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s). The tracking number will be active within under 24 hours.

• First Pharmacy IS NOT RESPONSIBLE FOR LOST OR DAMAGED PACKAGES.
• ONCE an ORDER HAS BEEN SCANNED BY THE MAIL CARRIER, First Pharmacy WILL CEASE TO HAVE ANY LIABILITY PERTAINING TO THE ORDER DELIVERY; all items at that juncture will be considered the sole responsibility and property of the customer.