Short answer
No FDA-approved dose of THC exists for anxiety. Clinical trials have not set one. State-licensed stores sell THC edibles in 10 mg servings. Guidance from state regulators says start at 2.5 mg or less, wait, then increase in small steps. For a first gummy, 1 mg to 2.5 mg THC is the common starting point. CBD gummies have no established dose for anxiety either.
Edibles work on a different curve
Inhaled THC reaches the blood in seconds to minutes. Edible THC moves through the stomach and liver. Effects start in 30 minutes to 2 hours. Peak blood levels arrive at 2 to 4 hours. Effects last 4 to 8 hours, and longer at high doses. A person who takes a second gummy at 45 minutes can stack a double dose before the first one peaks.
Starting doses
- 1 mg to 2.5 mg THC: first trial for a person with no tolerance.
- 5 mg THC: mid range. Many labels call this a half serving.
- 10 mg THC: one adult serving under Colorado and Washington rules. Package caps are 100 mg in both states.
- CBD only: labels run from 5 mg to 50 mg per gummy. Evidence for anxiety at these amounts is thin.
What studies show about THC and anxiety
NIDA reports that high THC doses can cause anxiety, paranoia, and panic, in part through effects on the amygdala. Low doses produce other effects. The dose-response curve is not a straight line. Studies in people with anxiety disorders are small and short. No trial has compared gummy doses against a placebo for an anxiety diagnosis.
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CBD gummies
Epidiolex, a CBD drug, is FDA approved for seizures. FDA has not approved CBD for anxiety. A 2011 trial gave 300 mg CBD to people with social anxiety disorder and reported lower anxiety during a public speaking test. That is one small study with one dose. A 50 mg gummy at a store is not the same product or amount.
Timing rules
- Eat a normal meal, or note an empty stomach. Food changes onset.
- Take one gummy.
- Wait 2 hours. Do not add more inside that window.
- Note effect, time, and dose in a phone note.
- Next session, change one variable.
Signs of too much THC
Fast heart rate, nausea, confusion, paranoia, and panic are the common reports. Poison center calls for edible cannabis rose as sales spread. CDC lists edibles as a source of cannabis-related emergency calls. There are no confirmed deaths from THC alone in adults.
What to ask at the store
Ask for THC mg per piece, not per package. A 100 mg package with 10 pieces holds 10 mg per piece. Ask for the CBD to THC ratio. Ask for the batch date and the state testing label. Labels list total THC, THC per serving, and serving count.
What is not known
No dose of edible THC is proven to reduce anxiety. Effects differ by person, tolerance, liver enzymes, and product. Store staff are not clinicians. If anxiety is a diagnosed condition, or you take other drugs, talk to a prescriber first.