diff --git a/autoload/vimtex/doc.vim b/autoload/vimtex/doc.vim
index 1bf4870a5a..e41359a9da 100644
--- a/autoload/vimtex/doc.vim
+++ b/autoload/vimtex/doc.vim
@@ -62,11 +62,26 @@ function! s:packages_get_from_cursor() abort " {{{1
     return s:packages_from_usepackage(l:cmd)
   elseif l:cmd.name ==# '\documentclass'
     return s:packages_from_documentclass(l:cmd)
+  elseif l:cmd.name ==# '\begin'
+    return s:packages_from_environment(l:cmd)
+  elseif l:cmd.name ==# '\end'
+    return s:packages_from_environment(l:cmd)
   else
     return s:packages_from_command(strpart(l:cmd.name, 1))
   endif
 endfunction
 
+" }}}1
+function! s:packages_from_environment(env) abort " {{{1
+  try
+    let l:env = a:env.args[0].text
+  catch
+    call vimtex#log#warning('Could not parse the environment name!')
+    return {}
+  endtry
+  return s:packages_from_command('\begin{' . l:env . '}')
+endfunction
+
 " }}}1
 function! s:packages_from_usepackage(cmd) abort " {{{1
   try
@@ -129,7 +144,7 @@ function! s:packages_from_command(cmd) abort " {{{1
   endwhile
 
   let l:candidates = []
-  let l:filter = 'v:val =~# ''^' . a:cmd . '\>'''
+  let l:filter = 'v:val =~# ''^' . escape(a:cmd, '\') . '\(\W\|$\)'''
   for l:package in l:packages
     let l:cmds = filter(readfile(s:complete_dir . l:package), l:filter)
     if empty(l:cmds) | continue | endif