Light liquid paraffin

Allopathic
Indications

Approved Indications:

  • Oral Use (Laxative):
    • Short-term relief of constipation, especially in elderly, post-operative, or non-ambulatory patients.
    • Management of fecal impaction in certain cases (under medical supervision).
  • Topical Use (Dermatological):
    • Dry skin conditions including eczema, psoriasis, ichthyosis, and xerosis.
    • Pruritus, especially in elderly individuals with aging or flaky skin.
    • Cradle cap and nappy rash in infants.
    • Soothing and moisturizing treatment for minor burns, radiation dermatitis, and skin irritation.

Clinically Accepted Off-Label Uses:

  • Adjunct in managing anal fissures (to reduce trauma during defecation).
  • Supportive skin care in patients undergoing chemotherapy or dialysis, where skin dryness is prevalent.
Dosage & Administration

Route of Administration:

  • Oral (as laxative)
  • Topical (as emollient)

Oral Use

Adults:

  • 15–30 mL once daily, preferably at bedtime.

Children over 3 years:

  • 5–15 mL once daily, at bedtime (only under medical advice).

Elderly:

  • Use with caution. Start at the lowest effective dose to minimize aspiration risk.

Duration:

  • Limit use to no more than 7 consecutive days to avoid complications such as lipid pneumonia or vitamin malabsorption.

Administration Notes:

  • Take on an empty stomach.
  • Avoid taking with meals or before lying down.
  • Shake the bottle well before each use.

Topical Use

Adults and Children:

  • Apply a thin layer to the affected area 2–3 times daily or as needed.
  • Massage gently into the skin until absorbed.

Infants:

  • Safe for use on nappy rash and cradle cap. Apply sparingly.
Mechanism of Action (MOA)
  • Topical: Light Liquid Paraffin forms an occlusive barrier over the skin, reducing trans-epidermal water loss. This helps retain skin moisture, softens the stratum corneum, and restores the natural lipid barrier, relieving dryness and irritation.
  • Oral: Acts as a lubricant laxative by coating the bowel lining and stool surface, reducing water absorption from the stool and facilitating its passage. It does not stimulate bowel motility.
Pharmacokinetics

Topical Use:

  • Absorption: Negligible through intact skin.
  • Onset: Immediate moisturizing effect upon application.
  • Systemic exposure: Minimal to none.

Oral Use:

  • Absorption: Poorly absorbed from the gastrointestinal tract.
  • Distribution: Minimal systemic distribution.
  • Metabolism: Not metabolized.
  • Excretion: Eliminated unchanged in feces.
  • Onset of Action: Typically 6 to 8 hours after ingestion.
  • Bioavailability: Not systemically bioavailable.
Pregnancy Category & Lactation

Pregnancy:

  • Topical use: Safe throughout all trimesters.
  • Oral use: Not recommended, especially in the third trimester, due to the risk of maternal aspiration and impaired absorption of fat-soluble vitamins.

Lactation:

  • Topical use: Considered safe during breastfeeding.
  • Oral use: Use with caution; may cause loose stools in breastfed infants if absorbed in significant amounts.

Recommendation:
Topical application is safe in both pregnancy and lactation. Oral use should be avoided unless absolutely necessary and supervised by a physician.

Therapeutic Class
  • Primary Class:
    • Topical Emollient and Skin Protectant
    • Oral Lubricant Laxative
  • Subclass:
    • Mineral oil derivative
    • Non-stimulant laxative
Contraindications
  • Hypersensitivity to paraffin or any excipients.
  • Intestinal obstruction, appendicitis, or undiagnosed abdominal pain (oral use).
  • Dysphagia or aspiration risk (oral use).
  • Rectal bleeding or lack of bowel movement after use (oral use).
  • Use in infants under 3 years (oral use).
Warnings & Precautions
  • Aspiration Risk (oral): May cause lipoid pneumonia, especially in elderly, debilitated, or sedated patients.
  • Nutrient Malabsorption: Long-term use may impair absorption of fat-soluble vitamins (A, D, E, K).
  • Anal seepage: May occur due to leakage of paraffin oil.
  • Fire Hazard (topical): Highly flammable—avoid smoking or open flames after application and around treated fabrics.
  • Folliculitis or acne-like eruptions can occur with overuse, especially in oily skin.
  • Use cautiously in children and elderly patients.
Side Effects

Topical Use:

  • Common:
    • Mild skin irritation
    • Greasiness
  • Uncommon:
    • Contact dermatitis
    • Folliculitis
  • Rare:
    • Acneiform eruptions
    • Allergic reactions

Oral Use:

  • Common:
    • Diarrhea
    • Anal leakage or discomfort
  • Rare:
    • Lipoid pneumonia (aspiration)
    • Fat-soluble vitamin deficiency (with prolonged use)

Timing & Severity:
Topical side effects are generally mild and local. Oral adverse effects are more severe when misused or used long-term.

Drug Interactions

Oral Use:

  • May impair absorption of:
    • Fat-soluble vitamins (A, D, E, K)
    • Oral contraceptives
    • Anticoagulants (e.g., warfarin)
  • Avoid co-administration with bulk-forming laxatives or other stool softeners.

Topical Use:

  • No known significant drug interactions.
  • May affect percutaneous absorption of concurrently applied topical drugs.

CYP450 involvement: Not applicable due to negligible systemic absorption.

Recent Updates or Guidelines
  • MHRA and NHS have issued fire safety warnings due to paraffin build-up in clothing and bedding, emphasizing the need to avoid open flames and washing fabrics regularly.
  • Recent dermatology guidelines continue to recommend paraffin-based emollients as first-line for eczema and other dry skin disorders.
  • Clinical use of oral paraffin is increasingly restricted to short-term use only, due to aspiration risk.
Storage Conditions
  • Store between 15°C to 25°C (59°F to 77°F)
  • Protect from direct sunlight
  • Do not freeze
  • Keep tightly closed and in original container
  • Keep away from fire or open flames
  • For topical products, clean nozzle and cap after each use
  • Keep out of reach of children