Saridon Components
Saridon contains three active ingredients: propyphenazone 150 mg, paracetamol (acetaminophen) 250 mg, and caffeine 50 mg 1.
Active Pharmaceutical Ingredients
The formulation combines:
- Propyphenazone 150 mg - an analgesic/antipyretic agent
- Paracetamol 250 mg - a well-established analgesic and antipyretic
- Caffeine 50 mg - an adjuvant that enhances analgesic efficacy
This triple combination has been specifically designed to provide faster onset of action and enhanced pain relief compared to single-agent therapy 1.
Inactive Ingredients
The tablet formulation also contains inactive excipients including cellulose, corn starch, magnesium stearate, and sodium starch glycolate 2.
Clinical Rationale for the Combination
The combination is pharmacologically rational because:
Caffeine acts as an analgesic adjuvant that potentiates paracetamol's antinociceptive effect through synergistic interactions and accelerates paracetamol absorption, resulting in faster pain relief 3
The triple combination demonstrated superior efficacy compared to paracetamol 500 mg, aspirin 500 mg, ibuprofen 200 mg, or placebo alone in clinical trials, with significantly more patients reporting pain relief at 30 and 60 minutes post-dose 1
The formulation allows for lower individual doses of each component while maintaining or enhancing overall analgesic efficacy, potentially reducing side effects 3
Important Formulation Considerations
A critical caveat: paracetamol and propyphenazone form a eutectic mixture at approximately 35:65 (w/w) ratio with a eutectic temperature of 56°C, which can cause physical instability in tablets, particularly under high humidity conditions 4. This requires careful manufacturing and storage considerations but does not affect the chemical integrity of the active ingredients.