“Start low, go slow”: the rule guiding safe use of medical cannabis

When a patient starts treatment with medical cannabis, a phrase often appears early in the first consultation: “Start low, go slow.” The advice, repeated by doctors in different countries, summarizes an approach that prioritizes safety, personalization, and respect for the biological rhythm of each organism.

Translated as “start low and go slow,” the method guides to start using small doses and increase gradually. The idea is simple but fundamental: observe how the body reacts and avoid both unwanted effects and lack of effectiveness.

Doctor Beatriz Jacob Milani, who works in chronic pain treatment and is a cannabis medicine researcher, explains that this principle is one of the pillars of good clinical practice. “‘Start low, go slow’ means starting with low doses and increasing progressively, allowing to find the minimum effective dose, with safety and good tolerability,” she states.

According to Beatriz, the strategy makes sense because the endocannabinoid system works very uniquely in each person. Genetics, body composition, age, comorbidities, and even how each organism metabolizes phytocannabinoids directly influence the treatment response. “The endocannabinoid system is highly individual, and this requires careful management from the beginning,” she reinforces.

Step-by-step adjustments

In clinical follow-up, the logic also remains: slowly but surely. Dose adjustments are made based on the patient's response, whether there was pain improvement, better sleep quality, anxiety reduction, or symptom control that motivated the prescription. All this without losing sight of tolerability.

This gradual follow-up is what allows achieving the so-called “lowest effective dose,” the point where the patient obtains the desired benefit with the minimum risks. “The slow adjustment ensures a safer, personalized, and consistent treatment with interindividual variability,” she concludes.