Cannabis dosing for beginners

'Start low, go slow' — the golden rule. Cannabis affects everyone differently. Conservative starter dose plus patience beats any rule of thumb.

CBD sublingual: 10 mg × 2/day, +10 mg per week to target (20–80 mg/day). Inhaled THC: 1 puff, wait 15 min. Oral THC: 2.5 mg, wait 2 h. Classic mistake: re-dosing before peak. Overdose: calm, water, counter with CBD, ER only for cardiac issues.

Why 'start low, go slow'

Cannabinoids are metabolized via CYP2C9/CYP3A4 with 3–5× genetic variability.

Tolerance, set, setting, stomach content and alcohol also matter.

Starter doses by route

CBD sublingual: 10 mg 2× daily.

CBD flower (vape/joint): 1–2 puffs.

4-week titration plan

Week 1: hold starter dose, journal effect.

Week 2: +30–50 % if target not reached.

Overdose

Unpleasant, virtually never lethal. Panic, tachycardia, nausea.

Calm environment, hydration, CBD 10–20 mg sublingual.

FAQ

How do I find my dose?

When the target effect is clear without side effects dominating.

Combine with alcohol?

No — potentiates THC and nausea.

Safe THC for beginners?

Inhaled: 2–5 mg. Oral: 2.5 mg. Never start with a 50 mg edible.

Drug interactions?

CBD inhibits CYP — warfarin, antiepileptics, some antidepressants.

How long does tolerance last?

Builds in 2–3 weeks, largely resets after a 2-week break.

Cannabis dosing for beginners — Start Low, Go Slow (2026)