As cannabis use expands with increasing legalization across the U.S., more products are becoming available and consumers, researchers, and healthcare providers alike are exploring how to understand and standardize cannabis dosage. One major development is the move toward a defined standard for THC—the primary psychoactive compound in cannabis.
The 5 mg THC Standard
Agencies such as the National Institute on Drug Abuse (NIDA), the National Cancer Institute, and other federal research organizations have adopted 5 mg of THC as a standard unit for clinical studies. This does not mean that 5 mg is a recommended serving for all consumers—it is simply a baseline used to compare effects in controlled environments.
Like alcohol or caffeine, THC affects individuals differently. A 5 mg dose may produce varied experiences depending on factors such as body weight, tolerance, genetics, and previous cannabis use.
Personalizing Your THC Dosage
Cannabis interacts with each person’s endocannabinoid system (ECS)—a network of receptors in the brain and body that plays a role in functions like sleep, appetite, and mood. The effects of THC and other cannabinoids (like CBD) vary depending on the individual and the method of consumption.
Here are some key factors that influence how a cannabis product might affect someone:
- Tolerance & experience level
- Method of consumption
- Cannabinoid and terpene content
- Body composition, age, and metabolism
- Product formulation and potency
Start Low, Go Slow
One of the most widely accepted guidelines for responsible cannabis use is: “Start low and go slow.”
For beginners, many suggest starting with a 2.5 mg THC dose, especially with edibles or tinctures, and adjusting as needed. With inhaled forms, start with a small puff and wait to see how you feel before consuming more.
It’s also important to note that THC potency in cannabis has increased significantly in recent years. Even experienced users may find today’s products more intense than those from the past.
Cannabis Consumption Methods and Typical Onset/Duration
Edibles & Beverages
- Onset: 30–90 minutes
- Duration: 4–8 hours
- THC is absorbed through digestion and processed by the liver, which may produce more potent effects compared to inhalation. Start with a low dose and wait before consuming more.
Inhalation (Flower & Vapes)
- Onset: Almost immediate (1–10 minutes)
- Duration: 1–3 hours
- Smoking or vaping allows for fast-acting effects. Inhaling provides more direct control over how much THC is consumed and when to stop.
Tinctures & Sublinguals
- Onset: 15–45 minutes
- Duration: 2–4 hours
- Absorbed under the tongue, these products often act faster than edibles and are easy to dose precisely.
Concentrates & Dabbing
- Onset: Immediate
- Duration: 1–3 hours
- Concentrates are potent and best approached with caution, especially for those new to cannabis. It’s recommended to use these products with guidance from someone experienced.
Working With Medical Professionals
If using cannabis under medical supervision, your healthcare provider may follow one of several strategies to determine the most appropriate dosage. These may include gradual increases or adjustments based on how your body responds. Always follow your provider’s recommendations and do not exceed prescribed usage.
The Entourage Effect
Many consumers and researchers refer to the “entourage effect,” a theory that suggests cannabinoids and terpenes may work together to shape the overall experience. While this concept is still being explored in scientific settings, it’s commonly used to explain why two strains with similar THC levels may produce different effects.
5 Tips to Find Your Ideal Cannabis Dosage
- Go Gradual – You don’t need to consume a full edible. Try a half or quarter piece to gauge your reaction.
- Be Patient – Especially with edibles, allow time for the effects to develop before taking more.
- Take Notes – Track how much you took, the method of use, how long it took to feel effects, and how long they lasted.
- Stay Consistent – Start with the same amount each time and make small, measurable adjustments.
- Read the Label – Understand THC and CBD content, serving size, and terpene profiles. Leading brands often provide detailed potency information.
Whether you’re exploring cannabis for relaxation, focus, creativity, or curiosity, finding the right dosage is part of the journey. Take your time, use trusted products, and always consume responsibly.
