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M366 Pill

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M366 are prescription, pain pills. They fall into the narcotic and analgesic category. Individuals with moderate to severe pain receive prescriptions for then to help alleviate discomfort. Each tablet combines an opioid with an analgesic for enhanced pain relief.

Each tablet contains the following;

  • 7.5 mg of hydrocodone
  • 325 mg of acetaminophen

Here’s what one looks like.


Hydrocodone reaches peak blood concentrations in most people within one to two hours. However, depending on a person’s metabolism, age, weight, and other factors, the effects decrease after four to six hours.

Possible side effects

In addition to relieving pain, this drug can cause drowsiness and feelings of euphoria. Common side effects can include:

  • Nausea
  • Dizziness
  • Moodiness
  • Itching
  • Inability to concentrate
  • Disorientation


The NIH provides documentation outlining numerous warnings about this pill. Individuals under prescription should always tell their doctor about all their medications, whether over-the-counter dietary or herbal supplements.

DEA schedule

Although the DEA accepts these tablets as a treatment medication, it puts severe restrictions on who can prescribe, take and possess them. Individuals caught in possession of these pills without a valid prescription may be fined and spend time in jail. In addition, selling is a felony and could result in long-term imprisonment.


Most doctors, however, limit prescription duration from five to seven days. Again, it is due to the highly addictive nature of hydrocodone bitartrate, which is an opioid. Some patients can become dependent in just a matter of days.

The U.S. DEA, Diversion Control Division, designates drugs containing hydrocodone bitartrate as a Schedule II “with a high potential for abuse.”


Consequently, it is possible to take a prescribed dose of this drug, have one or two alcoholic drinks, and suffer severe overdose symptoms, demanding emergency medical treatment.

Mixing alcohol with this medication can intensify drowsiness, cognitive impairment, and dizziness. It can also cause a rapid drop in blood pressure, profound sedation, breathing trouble, coma, and death.

For example, suppose alcohol is consumed casually in high amounts associated with hydrocodone bitartrate. In that case, it increases hydrocodone levels in the blood, risking overdose side effects like severe dizziness, slowed breathing, loss of consciousness, and death.

In addition, alcohol or any substance containing alcohol alters the metabolism of Hydrocodone bitartrate. Therefore, it can cause lower or higher concentrations in the bloodstream.


This medication should be stored between 68 to 77 degrees Fahrenheit and protected from light.

NDC code

The “M” on each tablet refers to the distributor’s name (Mallinckrodt Pharmaceuticals). The numbers refer to the NDC code (see below).

NDC CodeContents
0406-0125-01100 pills in 1 bottle
0406-0125-05500 tablets in 1 bottle
0406-0125-101000 pills in 1 bottle
0406-0125-12120 tablets in 1 bottle
0406-0125-2020 pills in 1 bottle
0406-0125-23 1 tablet in 1 blister pack
0406-0125-3030 pills in 1 bottle
0406-0125-6060 tablets in 1 bottle
0406-0125-62100 pills in 1 blister pack
 0406-0125-9090 tablets per per bottle

About M367

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