Edibles dosing — the guide

TL;DR

• Micro: 1–2.5 mg THC (beginner).
• Standard: 2.5–5 mg (moderate effect).
• Experienced: 5–15 mg.
• Never re-dose before 2 h!

Why edibles hit harder

Oral THC passes through the liver into 11-OH-THC — up to 4× more BBB-permeable than THC itself (Huestis 2007). Effect lasts 4–8 h.

Why oral dosing works differently than inhalation

Orally ingested THC passes through the liver before reaching the bloodstream. There, the first-pass effect produces 11-hydroxy-THC — a metabolite that crosses the blood-brain barrier more easily and has a subjectively stronger and longer-lasting effect than inhaled THC. At the same time, oral bioavailability is low and fluctuates widely depending on the meal, fat content, and individual enzyme profile. The same milligram dosage can affect two people very differently.

This leads to the only reliable rule: start small, wait long. Starting with 2.5 to 5 mg of THC and waiting at least two hours before any redosing prevents the classic overdose, where more is taken before the first portion has even taken effect. For CBD edibles, the risk profile is significantly more harmless, but the onset latency is comparable — here too, patience matters more than quantity.

• Starting dose: 2.5–5 mg THC, wait at least 2 hours
• 11-hydroxy-THC makes oral effects stronger and longer-lasting
• A high-fat meal significantly increases absorption
• For CBD: a consistent daily dose beats a high single dose

Homogeneity: the underestimated problem

Homemade edibles are rarely evenly dosed. If the cannabutter is not fully incorporated into the batter, one brownie may contain three times as much as the neighboring piece. Practical countermeasures: emulsify the fat with the liquid ingredients first, stir the batter longer than usual, pour into equal-sized molds instead of portioning freely, and do not preferentially eat the edge pieces. Ready-made CBD edibles available in Switzerland have an advantage here because they are analyzed batch by batch.

Swiss classification: Under food law, cannabinoid-containing foods are classified as novel foods and require authorization from the Federal Food Safety and Veterinary Office (BLV). Under narcotics law, the total THC value remains decisive: under 1% (THC + THCA × 0.877) it is not a narcotic. Anyone working in their own kitchen for personal use operates outside of food law — if the result is sold or given away, it is immediately considered placing on the market.

The influence of stomach contents and metabolism on absorption

The effects of edibles depend heavily on the current state of the digestive tract. Anyone who consumes cannabinoid-containing food on an empty stomach risks an unpredictable and often unpleasantly rapid absorption. In this case, the body absorbs the active ingredients irregularly, which can lead to unexpectedly intense peaks in effect. It is more sensible to consume them after a light, balanced meal. In particular, healthy fats play a crucial role, as cannabinoids are lipophilic and require fat as a transport medium to be absorbed efficiently through the intestinal mucosa at all.

In addition to food, individual enzyme activity in the liver determines the experience. The enzyme cytochrome P450 is largely responsible for the breakdown of THC. Since the genetic makeup of this enzyme varies greatly from person to person, some people break down the active ingredient extremely quickly, while others feel an intense effect for hours. This biological variance explains why the same dose is barely noticeable in one person, yet leads to an overdose in another. A cautious approach is therefore essential.

• Consumption on an empty stomach leads to irregular and often too rapid absorption in the gastrointestinal tract.
• Accompanying high-fat food significantly improves the bioavailability of cannabinoids.
• Genetic differences in liver enzymes influence the duration and intensity of the effects.
• Individual tolerance thresholds cannot simply be derived from other people.

Road traffic and detectability in Switzerland

In Swiss road traffic, a strict zero-tolerance practice applies to cannabis. The legal limit for the detection of tetrahydrocannabinol in the blood is a mere 1.5 micrograms per litre. Anyone exceeding this limit is legally deemed unfit to drive, which entails severe administrative and criminal consequences. Upon inhalation, the active THC level in the blood drops below this limit relatively quickly, although metabolites remain detectable in urine for a long time. With edibles, however, the curve behaves fundamentally differently.

Due to delayed absorption in the gastrointestinal tract and slow release from adipose tissue, the active THC level in the blood remains above the critical detection limit for significantly longer after consuming edibles. Even on the day after consumption, the limit in the blood may still be exceeded, even though subjectively no impairment is perceived anymore. For Swiss consumers, this means that a significantly longer break from driving must be observed after consuming THC-containing foods than after smoking or vaporising.

• Strict zero-tolerance policy in Swiss road traffic with a limit of 1.5 micrograms of THC per litre of blood.
• Delayed release from adipose tissue leads to persistently elevated blood levels over many hours.
• Subjective fitness to drive does not correspond to legal fitness to drive.
• Breaks from driving must be calculated much more generously after consuming edibles than after inhalation.

Sources of error in home production in the kitchen

During the private production of edibles in the home kitchen, laypersons frequently make avoidable mistakes that lead to unusable or overdosed products. The greatest hurdle is the correct activation of the cannabinoids, known as decarboxylation. Without sufficient heat, THC remains in its acidic, non-psychoactive form as THCA. However, if the temperature is set too high or the baking time is extended too long, the valuable active ingredients and terpenes degrade, which minimises the desired effect and negatively affects the taste.

Another common mistake is choosing the wrong carrier fat. Since cannabinoids are fat-soluble, saturated fatty acids such as coconut oil or butter are best suited for efficient extraction. The use of low-quality oils or an insufficient extraction time prevents the active ingredients from fully dissolving in the fat. Furthermore, anyone who does not precisely control the temperature during the extraction process risks an uneven concentration of active ingredients. A careful way of working and the use of kitchen thermometers are essential for consistent results.

• Incorrect decarboxylation leads either to ineffective products or to the uncontrolled degradation of active ingredients.
• Unsuitable carrier fats noticeably reduce the efficiency of active ingredient extraction.
• Lack of temperature control during the cooking process destroys sensitive terpenes and cannabinoids.
• Inaccurate measurement of the starting materials makes reliable dosing of the portions impossible.

The role of CBD edibles and legal distinction

While THC-containing edibles are subject to strict legal restrictions in Switzerland, CBD edibles are enjoying growing popularity. These products fall under Swiss food law, provided they are distributed commercially. For consumers, it is important to know that the total THC content of such products must strictly remain below one percent so that they are not classified as illegal narcotics. CBD edibles do not have an intoxicating effect, but are primarily valued for their potentially relaxing properties, although the scientific evidence for this is still growing.

The legal situation differs greatly between private use and placing on the market. Anyone who bakes CBD cookies for themselves operates in a private, largely unregulated area. However, as soon as these products are passed on to third parties, given away, or sold, the strict guidelines of the Federal Food Safety and Veterinary Office (FSVO) apply. Since cannabinoids in food are considered novel foods, an appropriate authorization is required for commercial sale. This serves to protect consumers from contamination.

• The total THC content of legal CBD edibles in Switzerland must always be below one percent.
• Commercial placing on the market requires authorization from the Federal Food Safety and Veterinary Office (FSVO).
• Private production solely for personal consumption is not subject to strict food law controls.
• CBD edibles do not have a psychoactive effect and are used for relaxation without intoxication.

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