๐ Naloxone Injection 0.4 mg/mL
๐น Description:
- Form: Clear, sterile, preservative-free injectable solution
- Strength: 0.4 mg/mL (commonly available in 1 mL ampoules or vials)
- Route: Intravenous (IV), Intramuscular (IM), Subcutaneous (SC), or Intranasal (off-label using injectable solution)
๐งพ Prescription / Indications:
| Indicated for | Purpose |
|---|---|
| Opioid Overdose (Emergency) | Reverses life-threatening depression of CNS and respiratory system caused by opioids like morphine, fentanyl, tramadol |
| Post-operative Opioid Reversal | Reverses residual opioid effects after surgery |
| Neonatal Opioid-Induced Depression | Reversal in newborns if mother received opioids before delivery |
| Off-label uses | Suspected opioid intoxication in unresponsive patients |
๐ฌ Nature / Composition:
- Active Ingredient: Naloxone Hydrochloride 0.4 mg/mL
- Type: Pure opioid antagonist
- Mechanism: Competitively binds to opioid receptors (ฮผ, ฮบ, ฮด) and displaces opioids like morphine, heroin, fentanyl
โ Advantages:
- Rapid onset: IV (1โ2 mins), IM/SC (2โ5 mins)
- Life-saving in opioid overdose
- No abuse potential
- Safe in children and neonates
- Can be repeated if needed
โ ๏ธ Precautions:
| Consideration | Details |
|---|---|
| Short duration | Effects may wear off before opioid โ repeat doses may be required |
| Withdrawal | Can cause acute opioid withdrawal in dependent individuals |
| Pregnancy | Use if benefit outweighs risk; can cross placenta |
| Cardiac risk | Monitor in patients with cardiac disease or post-op status |
๐ฝ Storage:
| Parameter | Guideline |
|---|---|
| Temperature | Store at 15โ25ยฐC; protect from light |
| Shelf life | Usually 24โ36 months (check label) |
| Do not freeze | Keep in original packaging |
๐ฆ Common Packaging:
| Form | Volume |
|---|---|
| Ampoule | 1 mL (0.4 mg) |
| Vial | 1 mL or multi-dose (rare) |
| Pre-filled syringe | Optional in emergency kits |