Milk of Magnesia + Liquid Paraffin Suspension

Belonging to the Suspensions category within the Gastroenterology therapeutic segment, this two-molecule laxative combination is distinguished by its dual-mechanism approach. Unlike single-agent laxatives that target only one aspect of bowel function, this formulation simultaneously hydrates and lubricates — providing comprehensive, comfortable laxative effect at doses that minimize the abdominal cramping associated with high-dose single-agent therapy.

The two actives represent fundamentally different pharmacological classes working synergistically. Milk of Magnesia (Magnesium Hydroxide) is the osmotic backbone of the formulation, drawing water into the intestinal lumen and softening stool to facilitate passage. Liquid Paraffin provides a mechanical lubricant effect, coating the stool and intestinal mucosa to facilitate easy defecation without straining.

For pharmaceutical marketing companies, this is a high-volume, repeat-prescription gastroenterology product with consistent demand across surgical recovery, cardiovascular care, geriatrics, and proctology — a broad prescriber base that provides year-round commercial stability. Saar Biotech manufactures it from our manufacturing facility in Baddi in 170ml and 225ml pack configurations with customisable flavour and sugar-free options.

At Saar Biotech, we manufacture Milk of Magnesia + Liquid Paraffin Suspension using a controlled high-shear homogenization process that ensures the two distinct active phases — aqueous (Milk of Magnesia) and oily (Liquid Paraffin) — remain permanently, uniformly dispersed throughout each batch.

• Two-Phase Suspension Stability: The primary formulation challenge for this product is maintaining a stable emulsion between the aqueous Milk of Magnesia phase and the immiscible Liquid Paraffin phase. Our compounding process and emulsifying excipient selection ensure the Liquid Paraffin remains uniformly dispersed without coalescing into separate oil droplets over the 24-month shelf life. This stability is critical for delivering consistent therapeutic effect from first dose to last.

• Uniform Re-Dispersibility: Despite controlled viscosity, Milk of Magnesia particles and Liquid Paraffin must re-suspend rapidly on gentle shaking. Our suspending agent system is specifically optimized so that a single vigorous shake before dosing fully redistributes both actives — ensuring dose-to-dose clinical consistency for patients who rely on this product for reliable constipation relief.

• Mint Flavour Palatability: The mint flavour base naturally imparts a pleasant, cooling taste that masks the slightly chalky character of Milk of Magnesia while psychologically reinforcing the formulation’s perceived digestive efficacy. This flavour profile has been validated as the most commercially successful for laxative suspensions in the Indian market, driving patient compliance and repeat purchase.

• Large-Format Fill Precision: The 170ml and 225ml formats require precise, consistent fill volumes on automated lines. Our high-speed filling equipment maintains ±2% fill accuracy across both pack sizes, minimising wastage and ensuring every unit meets the labeled volume claim. The 225ml sleeve-pack format with bell cap is particularly popular for premium brand positioning.

Manufactured and supplied by Saar Biotech from our third-party manufacturing facility in Himachal Pradesh, this suspension is indicated for:

• Piles (Haemorrhoids) & Anal Fissure: Constipation relief where straining is clinically contraindicated due to risk of worsening anorectal conditions. The lubricant action of Liquid Paraffin is particularly beneficial in these conditions.

• Pre- and Post-Operative Constipation: Bowel management before and after abdominal, colorectal, and anorectal surgical procedures. The dual mechanism ensures effective clearance without the need for straining.

• Cardiovascular Disorders: Patients post-myocardial infarction or cardiac surgery where straining at defecation elevates cardiac risk through Valsalva manoeuvre. The osmotic and lubricant combination reduces this risk significantly.

• Hernia Management: Prevention of intra-abdominal pressure elevation during defecation in hernia patients.

• Bowel Preparation: Pre-procedural cleansing for endoscopy, colonoscopy, and abdominal radioscopy.

• Elderly & Bedridden Patients: Management of immobility-related chronic constipation in geriatric care.

Dual-Component Laxative Mechanism

Milk of Magnesia (Magnesium Hydroxide) functions as an osmotic laxative. Being practically insoluble in water, it reacts with gastric hydrochloric acid to form magnesium chloride, which subsequently dissociates in the intestinal lumen. The resulting osmotic gradient draws water from the intestinal mucosa and surrounding tissues into the bowel lumen, increasing luminal fluid volume, softening stool consistency, and stimulating colonic peristalsis through bowel wall distension. The onset of osmotic action is typically 6–8 hours when taken at bedtime, making it ideal for overnight relief.

Liquid Paraffin acts as a mechanical lubricant. Its inert mineral oil nature means it is not absorbed from the GI tract. It penetrates and softens the stool mass from within, and simultaneously coats the colonic mucosa with a slippery film that reduces the friction between stool and intestinal wall, enabling defecation with minimal straining effort. This lubricant action complements Milk of Magnesia’s osmotic mechanism, providing more complete bowel clearance than either agent alone.

Manufacturing Integrity

• Emulsion Stability: Liquid Paraffin requires careful emulsification within the aqueous suspension matrix. Our validated excipient system prevents phase separation during storage while maintaining the specific viscosity needed for accurate dosing from a measuring cap or bell cap.

• Magnesium Hydroxide Uniformity: The suspended magnesium hydroxide particles must remain uniformly dispersed throughout the entire batch volume to ensure every 15ml dose delivers the full 11.25ml label claim. Our compounding sequence and in-process sampling protocol ensure uniform active distribution from first dose to last.

• Complementary Onset Profiles: Milk of Magnesia acts within 6–8 hours, aligning to produce a coordinated laxative effect when the recommended bedtime dose is taken. Liquid Paraffin acts mechanically from the moment it contacts stool, smoothing passage throughout the episode. This synchronized dual-mechanism onset is a compelling clinical narrative for prescribers.

• Minimal Systemic Absorption: Liquid Paraffin is not absorbed systemically. Magnesium is minimally absorbed (less than 20%) in patients with intact renal function. This low systemic burden makes the combination suitable for elderly patients on complex polypharmacy regimens — a key prescriber confidence point that translates to repeat prescriptions.

• Pack Size Commercial Logic: The 170ml pack provides approximately 11–17 doses at 15ml per dose — suited for acute short-course use. The 225ml format with sleeve pack supports repeat-use scenarios in geriatric and chronic constipation management, offering better per-dose value that encourages brand loyalty and repeat prescriptions.

• Sleeve-Pack Premium Positioning: The 225ml sleeve-pack format with bell cap differentiates the brand visually at pharmacy level and positions the product in the premium laxative segment — where patients and caregivers associate quality packaging with product efficacy. Mint flavour and sugar-free options further enhance premium positioning.

Saar Biotech offers comprehensive Contract Manufacturing (CMO) and Third-Party Manufacturing for Milk of Magnesia + Liquid Paraffin Suspension from our oral liquid manufacturing facility in Baddi, Himachal Pradesh.

• Facility: Dedicated liquid manufacturing block with automated filling and capping lines for large-format suspension bottles (170ml to 225ml). Our high-shear homogenization vessels are specifically engineered for emulsion-based suspension products.

• Capacity: Scalable from 5,000-unit brand-entry batches to 2,00,000+ unit commercial runs; 64×170ml and 48×225ml shipper configurations for distributor-level dispatch.

• Quality Lab: In-house GLP-certified lab with titrimetric analysis, viscometry, pH testing, MLT, and suspension uniformity checks on every batch.

• Turnaround: New orders — 30 to 45 working days. Repeat orders — 20 to 25 working days.

• Packaging: 170ml and 225ml; sticker label, metallic label, plain white cap, bell cap, measuring cap, sleeve-pack, with/without carton supply. Sugar-free and mint flavour options available.

• MOQ: 5,000–10,000 units per SKU depending on pack size and presentation.

1. Warehouse Storage: Store sealed cartons below 30°C in a cool, dry location away from direct sunlight. Temperature excursions above 35°C can alter the viscosity of the suspension base and potentially cause minor phase separation of the Liquid Paraffin emulsion.

2. No Freezing: Sub-zero temperatures cause irreversible separation of the Liquid Paraffin emulsion and permanent changes in the suspension base. Cold-chain logistics are not required, but storage in uninsulated vehicles or warehouses during summer months must be managed.

3. Shake Well Before Use: This instruction must appear prominently on all labels. Milk of Magnesia particles settle during storage and Liquid Paraffin may partially separate — thorough shaking before each dose is essential for uniform dosing.

4. Measuring Cap/Bell Cap: A calibrated measuring cap or bell cap must accompany all pack sizes. Accurate 15ml measurement ensures the patient receives the correct ratio of both actives per dose. The 225ml sleeve-pack format with bell cap is particularly popular for premium brand positioning.

Every batch of this laxative suspension is released from our GLP-certified quality control laboratories in Baddi only after the following analytical protocol is completed:

• Magnesium Hydroxide Assay: Titrimetric determination of Milk of Magnesia content confirming 11.25ml per 15ml label claim accuracy.

• Liquid Paraffin Viscosity: Viscometric testing to confirm the Liquid Paraffin component meets IP viscosity specifications, verifying lubricant functionality.

• Suspension Uniformity: Multiple aliquots sampled throughout the fill volume confirm uniform distribution of both active components from first dose to last.

• pH Testing: Verified within the physiologically compatible range to ensure patient comfort and active stability.

• Microbial Limit Testing (MLT): IP-compliant testing confirming absence of specified pathogens for oral suspension use.

• Certificate of Analysis (COA): Issued with every B2B batch for partner documentation and regulatory records.

This laxative suspension is generally well-tolerated at recommended doses for short-term use. Common effects include mild abdominal cramping or bloating (from osmotic activity), and occasional mild nausea. Dose-related diarrhoea may occur if the dose is excessive — patients should be counselled to start with the lower end of the dosing range. Prolonged use may cause electrolyte imbalance due to chronic magnesium exposure.

Contraindicated in acute abdominal conditions, intestinal obstruction, undiagnosed abdominal pain, and pregnancy/lactation without physician guidance. Severe renal impairment requires physician evaluation due to magnesium accumulation risk. Patients with known hypersensitivity to any component should not use this formulation.

For B2B manufacturing enquiries, third-party contracts, or to request pricing and packaging options for Milk of Magnesia + Liquid Paraffin Suspension, please use the enquiry form below.