Firstly, it's important to understand that inhaling is different than oral intake as the bioavailability is considered to be much higher from inhaling CBD. For those requiring immediate relief, vaping CBD is the recommended delivery system as the active compound enters the bloodstream instantly. When CBD is ingested in oil or edible form it takes 1-2 hours for the full effects to be felt.  Furthermore, when CBD oil is taken via the stomach, it needs to travel through the digestive system before it can enter the bloodstream and take effect. CBD oil represents a considerably lower absorption rate than other delivery systems. Usually, we recommend starting with small puffs to feel the effect, but if you take a bigger puff the amount of CBD will increase. As for psoriasis and arthritis, we get a lot of comments from customers who handle a variety of conditions such as psoriasis and arthritis, who say that Phenopen helps them.