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Substances Effects Reports

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Community harm-reduction information. Not medical advice. Content is available under the CC BY-SA 4.0 license.

Promethazine

Contents

Dosage & Duration

Dosage

Threshold5-12.5 mg

Light12.5-25 mg

Moderate25-75 mg

Strong50-100 mg

Heavy100+ mg

Duration

Onset30-60 minutes

Come Up20-60 minutes

Peak1-2 hours

Offset3-5 hours

After Effects12-12 hours

Total4-6 hours

Reagent Testing

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