Most adults take 3,000–5,000 mg of creatine monohydrate daily after an optional short loading phase.

A practical daily range is 2,500–15,000 mg of collagen peptides, while undenatured type II formulas for joints use 40 mg per day.

Collagen supplements are typically 2,500–10,000 mg per day, matched to goals like skin or joints for at least 8–12 weeks.

For Cialis dosage, typical starts are 10 mg as needed or 5 mg daily—never more than once per day.

Adults usually take 10 mg of cetirizine once daily; do not exceed 10 mg in 24 hours unless your clinician sets a lower dose.

CBD for insomnia in studies ranges 25–175 mg nightly; one 150 mg sublingual trial showed mixed sleep results.

One 8.4-oz (250-ml) Red Bull has 80 mg caffeine; larger cans range from 114–198 mg.

Most adults train well with 1–3 mg/kg (about 70–200 mg) of pre-workout caffeine taken 30–60 minutes before exercise.

Most healthy adults can have about 400 mg of caffeine per day; pregnancy and teens need lower limits.

Daily biotin needs are 30 micrograms for most adults; milligram doses exceed typical needs and can skew some lab tests.