4-HO-DPT, or 4-hydroxy-N,N-dipropyltryptamine, is a lesser-known psychedelic drug. It is the 4-hydroxyl analog of DPT. 4-HO-DPT was first synthesized by Alexander Shulgin. In his book TiHKAL (Tryptamines I Have Known and Loved), neither the minimum dosage nor the duration are known. 4-HO-DPT produces few to no effects. Very little data exists about the pharmacological properties, metabolism, and toxicity of 4-HO-DPT.
Day by day I'm falling more in love with you
And day by day my love seems to grow
There isn't any end to my devotion
It's deeper dear by far than any ocean
I find that day by day you're making all my dreams come true
And (So) come what may I want you to know
I'm (That I am) yours alone, and I'm in love (in love) to stay
As we go through the years day by day
(I said, "Day by day")