If you use enough Phenobarbital it should be sufficient, however even 10
grams can take up to 30 minutes to induce a loss of consciousness.
Adding a fast-acting Benzodiazepine such as Midazolam (Dormicum) will
put you to sleep much more quickly than Phenobarbital alone would.
But if you are using only Phenobarbital as your sleep-aid you might want
to swallow it first and then wait 10-15 minutes before swallowing the
If you place the Chloroquine tablets (intact) into gelatin or vegetable
capsules it may slow down their absorption for a few more minutes. It
will also be tasteless when you swallow the Chloroquine tablets inside