The sentence for a drug conspiracy charge depends on the amount of drugs seized and the offender's criminal history, notes The Pate Law Firm. First-time convictions of more than 1 kilogram of heroin, 5 kilograms of cocaine or 1,000 kilograms of marijuana attract sentences of 10 years to life.
Small amounts of drugs such as 500 grams of cocaine or 100 kilograms of marijuana carry less severe sentences of between five and 40 years, states The Pate Law Firm. Penalties for drug conspiracy charges can double for offenders with prior felony drug convictions. The government can also seize any property obtained from drug-related crimes.