Phentermine is a popular weight-loss medicine that has been approved in the US by the FDA (Food and Drug Administration). The dosage of this therapeutic drug involves its administration in prescribed amounts at one time, or at stated intervals. Read on to know more about the proper dosage of this medication and how to take it for safe but effective results.

Phentermine Dosage Ingredients

Phentermine hydrochloride, an anorectic agent, is the active ingredient used in the drug. The inactive constituents include the following:

  • Dibasic calcium
  • Crospovidone
  • Phosphate dihydrate
  • Povidone
  • Magnesium stearate
  • Shellac glaze
  • Titanium dioxide
  • Propylene glycol

Phentermine Dosage Forms and Strengths

The drug is available as extended-release capsules and tablets. It can also be obtained in the form of disintegrating or mouth-dissolving tablet. The prescribed dose of this medicine ranges anywhere from 15 mg to 37.5 mg.

Phentermine Dosage Indications

The drug is indicated as a short-term appetite suppressant that must be combined with routine exercises and a well-balanced diet. It is specifically used in the management of exogenous obesity for patients with an initial body mass index greater than or equal to 30 kg/m2 in the presence of other risk factors like diabetes, heart disorders or hypertension.

Phentermine Dosage Administration

The drug is orally administered to the patients and is generally varied to obtain a positive response with the lowest effective dose. Some patients are recommended a dose of 18.75 mg that is usually available in the form of half- tablets. In certain cases, an entire tablet taken in a single dose may cause serious side effects. Due to this reason, it may be recommended to be divided and taken in two doses. Physicians may increase the dose in patients who are undergoing prolonged treatment. Some tablets can be crushed and mixed with food. Pediatric patients under the age of 16 are not recommended to use this drug.

Phentermine Dosage Instructions

The weight loss drug is likely to be more effective when taken only for 12 weeks. It is highly essential to follow the directions given by healthcare providers for safe use of the drug. These include the following:

  1. The exact dose will be recommended by the physician based on the patient’s age, medical history and tolerance level.
  2. It should not be taken in larger or smaller amounts unless recommended by the physician.
  3. It must be taken once daily on an empty stomach before breakfast or 2 hours after the morning meal. In order to prevent the occurrence of sleep-related disorders such as insomnia, the drug is avoided at night and consumed, no later than 6:00 p.m.
  4. Use dry hands while taking out the pills from the medicine bottle.
  5. If the drug is not giving any positive results, immediately consult your health specialist. Do not take more of this medication for greater effectiveness as it may lead to severe side effects.
  6. Sudden withdrawal of the drug could give rise to unpleasant symptoms like depression and irritability. It is always advisable to consult your physician before discontinuing the drug.
  7. Store the drug at normal room temperature and keep it away from moisture as well as heat.

The drug should not be taken without a licensed physician’s prescription as it can cause psychological dependence and severe social dysfunction.

Phentermine Overdosage

Acute overdosage of this medication is manifested by symptoms like tremor, rapid respiration, confusion and hallucination. In such cases, healthcare provider should be informed immediately for fast-check up and treatment in order to prevent any fatal outcome.

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