Dosage Forms & Strengths. tablet, immediate-release: Schedule IV. 5mg (Ambien); 10mg (Ambien). tablet, extended-release: Schedule IV. mg (Ambien CR). Aug 1, - 20mg of Ambien is an overdose by a factor of two—at least according to standard prescribing instructions. 10mg is considered the maximum prescribed nightly dose. If I recall correctly Ambien ER came in mg at its maximum strength under prescription, but after a . It is recommended for men only in that high a ocalic.eu is stronger Temazepam or xanax? What is the. Learn about Ambien (Zolpidem Tartrate) may treat, uses, dosage, side AMBIEN is available in 5 mg and 10 mg strength tablets for oral administration. .. In rats, renal tumors (lipoma, liposarcoma) were seen at the mid- and high doses.